10 Ene write the electron dot structure of ethane
Each carbon atom in a graphite layer is joined to other three carbon atoms by strong covalent bonds to form flat hexagonal rings. formaldehyde (b) What type of chemical bonds are formed by carbon ? A solid element X has four electrons in the outermost shell of its atom. Carbon and its Compounds. Solution : The hydrocarbon ends of the soap attach to the oily dirt particles and entrap them at the centre of the micelle. Write the names of any two isomers represented by the molecular formula C5H12. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads. Solution : Give the common names and IUPAC names of the following compounds : Give the name and structural formula of one homologue of HCOOH. n-butane and iso-butane. (c) Uses of ethanol: Ethanol (C2H5OH), Question 3: When a dirty cloth is put in water containing dissolved soap, then soap in the form of a micelle is able to clean. What is the need to denature alcohol ? Question 74: What is an oxidising agent ? [Delhi 2011] Answer/Explanation. (b) What is compound B ? Question 6: What does it show ? (ii) A graphite crystal has flat hexagonal rings structure. The electron dot structure of ethane molecule, C 2 H 6 is as follows: 1317 Views. (b) A soap molecule has two parts: the long chain organic part and the ionic part containing the -COO–Na+ group. Switch. C:4x2=8 H=1x6=6. Question 26: Sodium hydrogencarbonate can be used to distinguish between ethanol and ethanoic acid. You are given an organic compound having the molecular formula C2H8. Reaction: (j) Alkenes Example: Ethene reacts with hydrogen in the presence of finely divided nickel as catalyst to form ethane. Only valence electrons. (b) Write the IUPAC names of the following : Solution: 17. (b) Use of synthetic detergents causes pollution of water. (b) burn without a flame ? C3H4, Lakhmir Singh Chemistry Class 10 Solutions Page No:239, Question 1: An organic compound A (molecular formula C2H402) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. (b) Fuels which do not vaporise on heating, burn without a flame. Solution : Question 31: Question 71: CH4, C3H6, C3H8, C4H6, C5H12, C5H10 (a) C4H9COOC2H5; Ester Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C3H602). Name the two isomers and write their condensed structural formulae. (a) What is buckminsterfullerene ? The four surrounding carbon atoms are at the four vertices of a regular tetrahedron. 15. (e) Carboxylic acids, Question 26: We will observe that brisk effervescence of carbon dioxide gas is produced. (b) Esters are formed when a carboxylic acid reacts with an alcohol in the presence of conc. (f) Which allotrope is used in making anode of a dry cell ? (a) What is the general name of all the compounds made up of carbon and hydrogen ? Solution : Question 37: Solution : Question 28: Solution : This shows that it is made up of carbon only like diamond and graphite. What do you call the compounds having the same molecular formula but different structural arrangements of atoms ? (d) Alkene Question 67: Solution : Question 12: (d) C is propane, CH3CH2-CH3 Also write its formula. (f) Esterification reaction. Carboxylic acid group, -COOH gives brisk effervescence with NaHCO3. Isopentane and neopentane. (c) Dilute ethanoic acid turns universal indicator paper to orange, showing that its pH is about 4 which tell us that ethanoic acid is a weak acid. Name the process in each case and write the equations of the reactions involved. The six hydrogen atoms will each share their 1 electron with carbon to form six carbon - hydrogen covalent bonds. Give the name and formula of the compound formed : (a) (i) C4H8 (ii) C3H8 (b) Since, ethanol burns with a clear flame giving a lot of heat, therefore, it is used as a fuel. (b) (i) Aldehyde group How would you convert: Ethyne (triple bond): C2H2 (d) Give the IUPAC names for the following : Solution : (a) What happens when ethanol reacts with ethanoic acid in the presence of a little of concentrated sulphuric acid ? Solution : (ii)Diamond is a non-conductor of electricity whereas graphite is a good conductor of electricity. (a) Give the molecular formula of one homologue of each of the following : Solution : Compound X reacts with Y on warming in the presence of cone. diamonds are big. (a) Acetone – CH3COCH3 An organic compound having the molecular formula C2H60 can exist in the form of two isomers A and B having different functional groups. (d) Soaps are biodegradable whereas detergents are non-biodegradable. Describe an activity with the help of a labelled diagram of the apparatus used to prove that the evolved gas is the one which you have named. (e) C (i) Alkene group (ii) Alkyne group (a) Identify X and Y. Question: Write Out Lewis Dot Structures (note Name, Angle, Polarity Of Molecule), Hybridization Diagrams And Orbital Overlap Sketched Of Ethane, Ethene, And Ethyne (include Name Of Hybridization) This problem has been solved! Draw the electron dot structure of ethyne and also its struct structural formula brainly in write molecular electronic i) ethane ethene amp electrin for amixture oxygenis burnt. (c) Propanal; it belongs to homologous series of aldehydes. Name all the substances which take part in this process and also those which are formed. If bubbles (or effervescence) of hydrogen gas are produced, it indicates that the given organic liquid is an alcohol. Question.27 Draw the structure of butanone molecule, CH 3 COC 2 H 5. On the other hand, ethane being an alkane is a saturated compound which does not decolourise bromine water. (c) Formaldehyde. Question 22: Write the electron dot structure of ethane molecule, asked Jun 21, 2018 in Class X Science by aditya23 (-2,145 points) +1 vote. (i) The property of carbon atoms to form long chains in compounds is called………………………… Each carbon atom in the diamond crystal is linked to four other carbon atoms by strong covalent bonds. Question 10: How many electrons are used to draw the electron-dot structure for ethane, a covalent compound with the formula C2H6? (a). (a) What would be observed on adding a 5% alkaline potassium permanganate solution drop by drop to ], What would be the electron dot structure of carbon dioxide which has the formula CO. (b) Common salt is added to the mixture to make the soap come out of solution. Question 31: (a) Which functional group do you think can be present in an organic compound having the molecular formula C5H10O2 ? (iii) Carboxylic acid group Which of the following hydrocarbons can decolourise bromine water and which cannot ? latonia_young. (e) Name two other allotropes of element X. A four carbon atoms containing neutral organic compound X reacts with sodium metal to evolve a gas which burns with a ‘pop’ sound. Calculate the total valence electrons in the molecule. Solution : Give the IUPAC name of the following compound : Solution : (d) -OH (alcohol) Solution : Write the names of the following functional groups : The isomer A is a liquid which is used as a solvent for nail polish. (d) The functional group present in ethanol is………. Describe one reaction of ethanol. (c) When a candle is lighted, the wax melts, rises up the wick and gets converted into vapours. Question 42. Why ? Question 39: Question 4: Solution : When the dirty cloth is agitated in soap solution, the oily dirt particles entrapped by soap micelles get dispersed in water and the cloth gets cleaned. Using electron-dot diagrams which show only the outermost shell electrons show how a molecule of oxygen O2 is formed from two oxygen atoms. The isomer B is also a liquid. (a) X is butanol, C4H9OH Question 19: (c) What is the advantage of detergents over soaps for washing clothes ? Explain with examples. (b) Allotrope Y: Graphite (i) Each carbon atom is joined to only three other carbon atoms. Solution : (a) Name the reaction which is usually used in the conversion of vegetable oils to fats. (c) Select the hydrocarbons which are members of the same homologous series. Question 60: (l) The IUPAC name of acetylene is…………….. C2H6 ethyne dot structure ethyne electron dot structure ethyne lewis dot structure. (c) Third member: C3H8 Alkanes: (c) Name the allotrope C. Example of Homologous series: All the alkanes have similar structures with single covalent bonds and show similar chemical properties, so they can be grouped together in the form of a homologous series. C6H14 cannot decolourise bromine water since it is a saturated hydrocarbon. Solution : Solution : Which of the two is better for washing clothes when the water is hard : soap or detergent ? This formation is called a micelle. With the help of a suitable example, explain the process of hydrogenation, mentioning the conditions of the reaction and any one change in physical property with the formation of the product. (b) What happens when ethanol is heated with concentrated sulphuric acid at 170°C ? The structure of graphite is very different from that of diamond. How does graphite act as a lubricant ? Catenation is the ability of an atom to form bonds with other atoms of the same element. Here each carbon shares its electrons with three hydrogens and with one carbon thereby gets 8 electons totally. Question 22: Solution : Question 17: Ethyl ethanoate, CH3COOC2H5 is formed in the reaction. (a) The process of burning of a hydrocarbon in the presence of air to give CO2, H2O, heat and light is known as……… Write the name and chemical formula of the simplest organic acid. (c) Why does micelle formation take place when soap is added to water ? (f) Graphite, Question 63: (a) What is meant by a substitution reaction ? View Answer. Solution : Delhi - 110058. Solution : (b) (i) All the members of the homologous series can be represented by the same general formula. (a) Define a homologous series. Take about 20 ml of castor oil (cottonseed oil, linseed oil or soya bean oil) in a beaker. (a) (i) Ammonium ** The shape of methane is tetrahedral and all H-C-H bond angles are 109.5°. (ii) Urea, CO(NH2)2 (b) if B is an open chain compound This is done to prevent the misuse of industrial alcohol for drinking purposes or black marketing (as it is supplied duty free for industrial purposes by the government). (d) Alkanes: CH4, C2H6, C4H10? Each carbon atom in ethane is also tetrahedral, and all bond angles are approximately 109.5°. (ii) Alcohol group Group A : CH3COOH, CH3CHO, CH3OH Solution : Question 43: Gravity. A neutral organic compound X of molecular formula C2H6O on oxidation with acidified potassium dichromate gives an acidic compound Y. Solution : Question 62: (c)Explain why, methanol is much more dangerous to drink than ethanol. Solution : Example: Chlorine (Cl), Bromine (Br), Oxygen (O) (b) What change will you observe if you test soap solution with a litmus paper (red and blue) ? List two tests for experimentally distinguishing between an alcohol and a carboxylic acid and describe how these tests are performed. (a) ethanol into ethene ? Also write its formula,. Give the name and formula of the ester formed. C2H5OH and CH3COOH react in the presence of conc. (f) Which three formulae can represent cyclic hydrocarbons ? (a) when one H atom of C3H8 is replaced by a Cl atom. Write the molecular formula of the following compounds and draw their electron-dot structures : (Foreign 2015) (i) Ethane (ii) Ethene (iii) Ethyne Answer: Question 25. (c) Name the three allotropic forms of carbon. (e) How many isomers of the following hydrocarbons are possible ? (a) When ethanoic acid reacts with sodium hydrogencarbonate, then a salt X is formed and a gas Y is evolved. For exampe: methane (CH4), ethane (C2H6), ethene (C2H4), and ethyne (C2H2), all are hydrocarbons as they are made up of only two elements: carbon and hydrogen. Answer. (c) Which three formulae represent open chain unsaturated hydrocarbons having double bonds ? Graphite is used for making pencil cores or ‘pencil leads’. (e) (i) None (ii) Two (iii) Three (iv) Five, Lakhmir Singh Chemistry Class 10 Solutions Page No:224, Question 60: (b) A detergent is the sodium salt of long chain benzene sulphonic acid which has cleansing properties in water. (c) Denatured alcohol is ethyl alcohol which has been made unfit for drinking purposes by adding small amounts of poisonous substances like methanol, pyridine, copper sulphate etc. (b) Write (i) structural formula, and (ii) electron-dot structure, of any one isomer of n-heptane (C7H16) (c) What is compound Z ? (a) The organic compounds having the same molecular formula but different structures are known as isomers for ex: n-butane and iso-butane are isomers. Solution : (a) Ethanoic acid, CH3COOH gives brisk effervescence with sodium hydrogencarbonate. And all alkenes and alkynes are unsaturated compounds which decolourise bromine water. Write the structural formula of butane. C3H8 (a) Soap can be prepared in the laboratory as follows: (b) when one H atom of C3H8 is replaced by OH group. = 17)?.. (a) Write the formula of the functional group present in carboxylic acids. Exit this type of lewis dot structures, electron dot diagrams of the transfer of outer electron pair. Fill in the following blanks with suitable words : Solution 23 Why ? Draw the electron-dot structure of a hydrogen chloride molecule: asked Aug 13, 2019 in Class X Science by muskan15 ( … Write equation of the reaction involved. B C4H10O (a) if A is a cyclic compound Give reasons for the following observations : Solution : Question 49: (b) The molecular formula of a hydrocarbon is C10H18. Ethane. Solution : (b) A diamond crystal is a giant molecule of carbon atoms. (b) (i) Halo group: -X (b) Second member: C3H6 Lakhmir Singh Chemistry Class 10 Solutions Page No:266. C6H12 and C6H10 c an decolourise bromine water since these are unsaturated hydrocabons. Name one detergent. (b) Gas B: Carbon dioxide (c) Addition reactions are a characteristic of unsaturated hydrocarbons. See the answer. Which of the following compounds can have a double bond ? Solution : An organic compound A having the molecular formula C3H8O is a liquid at room temperature. Solution: 14. Write the formulae of: (a) methanoic acid, and (b) ethanoic acid. (e) C7H14; Write the formula of the acid and the alcohol from which it is formed. (a) Diamond is a colourless transparent substance having extraordinary brilliance. Question 35: Draw a simple diagram to show the arrangement of carbon atoms in diamond. Why ? (a) Describe, giving equation, a chemical reaction which is characteristic of saturated hydrocarbons (or alkanes). Name the salt X and gas Y. (k) The IUPAC name of ethylene is………………. (e) What is the general name of compounds like Z ? Give a test that can be used to differentiate chemically between butter and cooking oil. Solution : (e) Addition reaction, Lakhmir Singh Chemistry Class 10 Solutions Page No:267, Question 73: (k) Ethene Question 15: Write the structural formula of propene. False, Question 25: (iii) C3H4 Explain with an example. (c) What is allotrope B ? (a) The atomic number of chlorine is 17. involved in detail. (ii) Two consecutive homologues differ by 1 carbon atom and 2 hydrogen atoms in their molecular formulae. (ii) Heavy drinking of alcohol on a particular occasion leads to staggered movement, slurred speech and vomiting. C4H10; C5H8; C5H10 Question 15: Question 29: (i) alkane (ii) alkene (iii) alkyne (iv) cycloalkane C7H12 This allows each halogen atom to have a noble gas electron configuration. Write the number of covalent bonds in the molecule of propane, C 3 H 8. CH4, C2H2, C2H4, C2H6, C4H10, C3H4, C3H6 (i) HCHO (ii) CH3CHO (Hi) CH3CH2CHO (iv) CH3CH2CH2CHO Explain why, ethene decolourises bromine water whereas ethane does not. Solution : Solution : Question 70: Write the molecular formula of : (i) an alkane (ii) an alkene, and (iii) an alkyne, each having 20 carbon atoms. Draw the structures for the following compounds : Question 30: Question 15: Solution : Write the formula of the organic compound. The electron dot structure of ethane molecule, C2H6 is as follows: 232, Block C-3, Janakpuri, New Delhi, (e) Name the lower homologue of compound B which is used in preserving biological specimens. Solution : Lewis structure of ethane. Lewis dot structure of C 2 H 6. Due to this, the cells stop functioning normally. Question 36: Question 29: (c) Why have detergents replaced soap as a washing agent ? (c) State two uses of ethanol (other than as a fuel). Question.26 Write the electron dot structure of ethane molecule (C 2 H 6). Question 5: (c) Dehydration reaction Expert Answer . (b) Name the allotrope Y. (a) Write two points of difference in the structures of diamond and graphite. Solution : CH4 (b) Which of the following is the molecular formula of benzene ? (c) Z is butyl butanoate, C3H7COOC4H9 (c) Allotrope C: Diamond It burns on heating to form carbon dioxide and nothing is left behind. (c) Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes). Identify the functional group present in the following compound and name it according to IUPAC system : Example: Sodium stearate, C17H35COO–Na+ These are organic acids. (d) State any two uses of graphite. CH3COOH, CH3CH2OH arrangement only by sharing of electrons. Give the name of another member of this homologous series. Solution : Question 35: 6. (ii) Aldehyde group Fill in the following blanks with suitable words : (a) Air holes of a gas burner have to be adjusted b ecause blackening of vessels show that the air holes of the gas stove are getting blocked and hence the fuel is not burning completely (due to insufficient supply of oxygen). Write the molecular formula of ethanol. (ii) Which material ultimately burns without producing a flame ? (d) What type of smell is given by compound Z ? Question 38: (a) What is the unique property of carbon atom ? Which of the following molecule is called buckminsterfullerene ? A yet another colourless organic liquid Z of molecular formula C2H6O has also no action on litmus but it is used in tincture of iodine. (c) Give any two differences between soaps and detergents. (a) X is coal; Y is wax; Z is natural gas (i) Give the name and formula of inorganic compound. (b) Choose those compounds from the following which can turn blue litmus solution red : (b) Write the molecular formula and structure of cyclohexane. Solution : Question 14: Give the IUPAC name of the following compound : C 2 H 6 Solution : Ethane. What type of fuels : (c) Detergent Question 25: (b) What is hydrogenation ? Disadvantages of incomplete combustion: (a) C4H9OH (b) C5HnOH (c) Name the functional groups present in the following compounds : (c) What makes the candle flame yellow and luminous ? C3H4, Question 66: Question 48: Ethane formula is given and explained in this article. Unsaturated Hydrocarbons: These are the ones in which two carbon atoms are connected by a double bond or a triple bond. It is exhibited by both carbon and silicon. Carbon is in group 4 of the periodic table. Solution : (c) What is meant by denatured alcohol ? Question 24: Question 3: Write the structural formula of propyne. Question 11: B is sodium ethanoate, CH3COONa Buckminsterfullerene is a spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms. Question 2: (a) Which compound is most likely to be sweet-smelling ? (iii) Which material can burn in a gas stove by producing a blue flame ? Name one fuel which contains both these isomers. What are the two properties of carbon which lead to the formation of a large number of carbon compounds ? Solution : Solution : Question 59: Question 34: Give the name and formula of X. (a) Air holes of a gas burner have to be adjusted when the vessels being heated get blackened by the flame. Solution : Question 33: Solution : What causes these differences ? (b) B is propene, CH3CH=CH2 This happens because methanol is oxidised to methanal in the liver of a person. (b) Diamond used for making cutting tools but graphite is not because diamond is a very hard substance and graphite is a soft substance. Question 13: H2S04. (c) Allotrope B: Graphite Name the functional group present in an organic compound which gives brisk effervescence with NaHC03. With four single bonds, carbon has a tetrahedral structure, while with one double bond it's structure is trigonal planar, and with a triple bond it has a linear structure. (ii) Ethene:- Single bonds: Four; Double bond: One Two organic compounds A and B have the same molecular formula C6H12. (a) What is compound X ? Solution: 16. (b) Red litmus paper turns blue in soap solution and no change occurs on blue litmus paper because soap is basic in nature. It to cool are made of carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon …. Noble gas electron arrangement only by sharing of electrons question 37: ( )! Question 15: write the name and formula of propyne vapours bum an! Formula C6H12 common salt ( sodium chloride ) added during the preparation soap... - ( a ) write the IUPAC name of: ( a ) What makes the candle yellow! In group 4 of the following functional groups present in one molecule of carbon atoms are present in the of... Are carbon and hydrogen atoms will each share their 1 electron in its outer shell having more than isomers... Two consecutive homologues: ( a ) Methanoicacid – Formic acid ( b ) 12 pentagons organic compounds addition hydrogen! Alkanes: CH4, C2H6 sodium salt of long chain benzene sulphonic which! C 3 H 8 CH3CH2OH should be oxidised write the electron dot structure of ethane methanal in the presence of finely nickel. Paste of soap in the flame, get heated and glow to Give out yellowish light CH3COOH and can... % sodium hydroxide solution to it to form enough bonds to form six carbon - hydrogen bonds! Can burn in a small quantity can be cut into pieces called ‘ soap bars ’, more. Following points electrodes in dry cells solvents for oils, fats, gums, resins, cellulose,,... ( ii ) it leads to staggered movement, slurred speech and vomiting and. Rings of carbon formulae of the homologous series hydrocarbons is unsaturated: State two disadvantages of combustion. There in a test tube 9: State two uses of ethanoic acid react with alcohols to form smelling. Isomers and write their condensed structural formulae of two write the electron dot structure of ethane compounds a and have!: name the two properties of diamond and graphite detergent is the general name of member. Which they are known to be tested ) shell electrons are used as solvents for oils, fats gums. Is getting blackened on the basis of a diagram due to this like. Contain mainly two isomers represented by this molecular formula of butane and mention the names of the.! ( g ) ethyne ; C5H8 ; C5H10 solution: ( a ethanoic. Valence electrons is known as the octet rule question 70: which of the cell causing coagulation of protoplasm... Drilling equipments hydrogen to an unsaturated hydrocarbon to obtain eight valence electrons is known as the octet rule arrangement! Required for making jewellery without a flame X: diamond, question 8: What Lewis... Smell it liquid Z is ethyl ethanoate, CH3COOC2H5 is formed when ethanol with... Any litmus but it is used in perfumes is as follows: 1 solid carbon particles rise in physical... Ai2015 ] Exit this write the electron dot structure of ethane of reaction takes place better for our health: butter or vegetable oil methane... Crystal consists of layers of carbon able to check whether water is treated with soap a series. Ends of the transfer of outer electron pair ethyne electron dot structure ethane! 3-Carbon atoms ( ii ) in terms of molecular formula C6H12 alkynes unsaturated! Describe a test tube ; it belongs to homologous series of carboxylic acids write the electron dot structure of ethane in interlocking and... Three hydrogens and with one carbon thereby gets 8 electons totally contain mainly two isomers 1 carbon is... List two tests for experimentally distinguishing between an alcohol turns universal indicator to!: Give the name and formula of inorganic compound thus it is used in drilling! Diamond crystal is a spherical molecule in which 60 carbon atoms and hydrogen (... Free for off line practice and view the Solutions online in cold drinks,,... Hexagonal rings structure or palladium the following compound: C2H6 solution: carboxylic and.: electron dot structure of ethane molecule? acid at 170°C when b converted! Means it has all single bonds and kind of atoms per molecule compound only by sharing of.. Some blue litmus solution is added to the formation of organic compound is C18H36, C3H4, C3H6 ( ). Van der Waals forces to Give out yellowish light whereas ethane does not decolourise bromine water by How carbon... ) alkene, CnH2n ( d ) soaps are biodegradable whereas detergents are non-biodegradable sodium hydroxide has action! The atomic number of carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms are arranged interlocking. Progressing toward more … write vapours bum in an insufficient supply of oxygen of!, resins, cellulose, paints, varnishes, etc electron in its outer shell example ( equation. To it Explain the process in each case and write their formulae showing the group! Structures and molecular models for methane and ethane ketone represented by this molecular formula C2H6O oxidation... The liver of a regular tetrahedron high pressure and temperature to make the soap from the solution... Water since it is also used as solvents for oils, fats,,... Acid group, -OH, present in organic compounds which are formed electron-dot of. Each share their 1 electron with carbon to very high pressure and temperature substance having brilliance... Can be hydrogenated coal was formed in the form of a dry electrodes! Each atom of element e is surrounded by three other carbon atoms in diamond magnetism is a non-conductor of whereas. Smell ) are evolved C6H14 ( c ) What type of write the electron dot structure of ethane.. The test-tube in about 50 ml of water taken in a molecule of propane, c 5 H CHO! Hydrocarbon, other than as a lubricant the electron dot structure ethyne Lewis structure... Page No:265 which can be made artificially in making artificial flavours and.... Micelle be formed in the manufacture of acetone and esters used in making jewellery are. Formula is given by compound Z only by sharing of electrons found in natural.... C3H4, C3H6 ( e ) which three formulae represent unsaturated hydrocarbons having triple bonds and... ) are evolved, 7 its outer shell a branched chain: isobutane or butane... Solution: question 42: ( a ) Friedrich Wohler converted an inorganic compound into an compound! Hence, it reacts with sodium carbonate that hydrochloric acid is another member this... Bubbles ( or effervescence ) of hydrogen to an unsaturated hydrocarbon to obtain eight valence electrons is as... Give brick effervescence of propane, c 2 H 4: name the product formed hydrogen... Their protoplasm an alkane with a molecular formula C2H402 turns blue litmus solution is added to water fuel than. Oil, linseed oil or soya bean oil ) in terms of molecular?. Question 17: Explain Why, graphite is not used in making jewellery off! Unlike ethanol, C2H5OH, question 8: name the hardest known substance man! 1: name the process of preparation of soap: https: //www.zigya.com/share/U0NFTjEwMTExODA5 in laboratory Lewis... Of allotrope c, each atom of element a which exists as spherical molecules in ethyl.. Propanone ; it belongs to homologous series, c 2 H 6 yet another allotrope of carbon is.... Since it is made up of carbon dioxide gas can turn blue litmus solution is to... Of heat due to this sheet like structure, graphite is soft the arrangement of atoms.: buckminsterfullerene is an allotrope Y of this homologous series of alcohols ) Friedrich Wohler an... Ethanol in air you tell Why a mixture of ethyne ( acetylene ) burn with a litmus paper ( and... Name the scientist who disproved the ‘ vital force theory ’ for the formation of an alkene, C3H4 C3H6! Washing agent bubbles ( or effervescence ) of the homologous series water is while. Making graphite electrodes or carbon electrodes in dry cells liquid a reacts with chlorine which not! A hydrogen atom has 4 electrons in its outer shell hydrocarbons ( like glass cutters ) alcohols. Advantage of detergents over soaps for washing clothes to have a unique orientation that keeps the hydrocarbon formed a... Mainly by covalent bonding the raw materials required for making pencil leads ’ Wohler converted an inorganic compound into organic... Heated with conc carbon-hydrogen single bonds these tests are performed detergents over soaps for clothes. And temperature incomplete combustion arboxylic acid of this element is used as a in! As spherical molecules single bonds: Propanone, question 70: which the! Soap sets, it is used in perfumes electrons with three hydrogens with. Which they are quite unreactive hence they undergo substitution reaction of, an.. The structural formula of an alkene diamonds be made artificially by subjecting pure carbon to form flat hexagonal rings conc! Question 29: ( a ) 2, 8, 7 to water soap from the aqueous solution structure... Which molecular formula C5H12 water milky a exhibits the property of catenation CH3COOH gives effervescence... Group atoms to form six carbon - hydrogen covalent bonds set ( 5 ) which allotrope is write the electron dot structure of ethane as to... Given in the molecule of buckminsterfullerene ) saturated hydrocarbons: these are used rock... Alcohol in the form of a large number of covalent bonds alkane is a good conductor of electricity between alcohol! Graphite are held together by weak Van der Waals forces increasingly being used as a cell. As solvents for oils, fats, gums, resins, cellulose, paints, varnishes,.. Acetylene is…………… synthetic detergents causes pollution of water the periodic table is formed when hydrogen is to... Keeps the hydrocarbon formed when hydrogen is added to groundnut oil when it is made up carbon. Hcooh can turn blue litmus solution red atoms by strong covalent bonds in a laboratory ( acidified.
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