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write the electron dot structure of ethane

involved in detail. (ii) Chloroethane – C2H5Cl (ii)Diamond is a non-conductor of electricity whereas graphite is a good conductor of electricity. Solution : Question 44: Write its electronic configuration. (a) Giving their structures, state the number of single bonds, double bonds and triple bonds (if any) in the following compounds : (d) Which compound contains only single bonds ? (c) Name the functional groups present in the following compounds : How is it related to diamond and graphite ? (a) Propanone (b) Butanone (d) Used for making jewellery formula of butane is C4H10; Its isomers are n-butane Write the number of covalent bonds in the molecule of ethane. (f) Graphite, Question 63: (d) State any two uses of graphite. Question 48: Solution : (a) Give the names and structural formulae of the next two higher homologues of methane. Complete the following equations : C5H10, Question 70: Molecular formula of ethene is C 2 H 4 electron dot structure of ethene CH 2 = CH 2 Solution : Question 11: Question 20: (b) What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of cone. (i) Give the name and formula of inorganic compound. Write the formula of the acid and the alcohol from which it is formed. Question 23: Also write its formula. (b) What is the gas B ? If the blue litmus solution turns red, it shows that the organic compound is acidic in nature and hence it is a carboxylic acid. Methanol damages the optic nerve causing permanent blindness in a person. CH3OH They undergo addition reaction in the presence of a catalyst like nickel or palladium. Solution : (d) Give one example of a hydrocarbon, other than pentane, having more than three isomers. Write the electron-dot structures for : (i) ethane, (ii) ethene, and (iii) ethyne. Common salt is added to precipitate out all the soap from the aqueous solution. What is the molecular formula and structural formula of a cyclic hydrocarbon whose one molecule contains 8 hydrogen atoms ? (iii) C3H4 Solution : Answer: Explanation: 99. Give the name and structural formula of one member of the following : Name the hardest natural substance known. (b) A carboxylic acid reacts with sodium hydrogencarbonate to give brisk effervescence of carbon dioxide gas but an alcohol does not react with sodium hydrogencarbonate. C6H12, C6H14, C6H10 State whether the following statement is true or false : What is the common name of methanol ? Why ? Solution : (b) B is propene, CH3CH=CH2 (a) What is the molecular formula and structure of the alcohol which can be thought to be derived from pentane ? (a) Butanol, C4H9OH Example: Methane (CH4) and ethane (C2H6) The various layers of carbon atoms in graphite are held together by weak Van der Waals forces. (b) Describe the structure of a soap molecule with the help of a diagram. Question 4: Carbon forms strong bonds among themselves and with other elements and this makes the carbon compounds stable whereas silicon shows catenation property due to which it forms compounds with hydrogen having chains of up to 7 or 8 silicon atoms; but due to weak bonds, these compounds are unstable. Solution : Question 38: Solution : Lakhmir Singh Chemistry Class 10 Solutions Page No:243. Question 61: Write its name and structural formula. Ethanol reacts with ethanoic acid to form ethyl ethanoate ester. Describe one reaction of ethanol. Solution : Question 17: They are quite unreactive hence they undergo substitution reaction with chlorine in presence of sunlight. Solution : Name two elements which exhibit the property of catenation. Ethanol is used as an additive in petrol. C6H12 and C6H10 c an decolourise bromine water since these are unsaturated hydrocabons. To which homologous series does it belong ? (a) Explain the process of preparation of soap in laboratory. (b) Which of the following is the molecular formula of benzene ? Carbon dioxide (CO2) gas is evolved in the reaction. Ethane. Solution : Question 21: H2SO4 at 170oC. (c) Addition reactions are a characteristic of unsaturated hydrocarbons. Y is ethanoic acid View Answer. Question 4: (b) Explain why, diamond is hard while graphite is soft (though both are made of carbon atoms). Question 30: (a) Give IUPAC names and formulae of an organic compound containing single bonds and the other (c) What will you observe when dilute ethanoic acid and dilute hydrochloric acid are put on universal indicator paper, one by one ? (e) Carboxylic acids, Question 26: Name the catalyst used. Solution : In a candle, there is no provision for the proper mixing of oxygen (of air) for burning wax vapours. C5H12 CH3—CH2—Br (e) C A graphite crystal consists of layers of carbon atoms or sheets of carbon atoms and these layers are held together by weak Van der Waals forces. Write the equation of the reaction involved. (a) The form of carbon which is known as black lead is…………………….. (c) What is allotrope B ? Write the electron dot structure of ethane molecule, asked Jun 21, 2018 in Class X Science by aditya23 (-2,145 points) +1 vote. This incomplete combustion of wax produces small unburnt carbon particles. Give reason for your answer. Name the process in each case and write the equations of the reactions involved. 4. Each carbon atom in the diamond crystal is linked to four other carbon atoms by strong covalent bonds. Question 15: Write the structural formula of propene. What are the raw materials required for making soap in a laboratory (or at home) ? (b) Which compound contains a carboxyl group ? (a) Activity: Write the formulae of: (a) methanoic acid, and (b) ethanoic acid. (b) Y is butanoic acid, C3H7COOH Gravity. Question 8: (i) It is used in the manufacture of paints, varnishes, lacquers, medicines, perfumes, dyes, soaps and synthetic rubber. The solid element A exhibits the property of catenation. Why ? Homologous series of alkanes: Methane, CH4; Ethane, C2H6; Propane, C3H8; Butane, C4H10; Pentane, C5H12 (d) C is propane, CH3CH2-CH3 (e) Addition reaction, Lakhmir Singh Chemistry Class 10 Solutions Page No:267, Question 73: Solution : Question 42: Also write their formulae showing the functional group present in them. Calculate the total valence electrons in the molecule. Name the simplest ketone. Solution : (e) What type of reaction takes place when B is converted into C ? Question 18: What is the Structure of an Ethane Molecule?. (c) Why is graphite used for making dry cell electrodes but diamond is not ? Solution : Alkanes burn in air to produce a lot of heat due to which they are known to be excellent fuels. (b) Choose those compounds from the following which can turn blue litmus solution red : Question 31: Solution : Acetone, Question 9: (a) Write the IUPAC name and common name of CH3CI (e) Name another allotrope of element A which exists as spherical molecules. Give the general formula of alkanes. Question 29: (i) Aldehyde group (ii) Alcohol group (iii) Carboxylic acid group (iv) Halo group Hydrogen can only form 1 bond.. Name its homologous series. A gaseous material Z which occurs along with petroleum is increasingly being used as a fuel in running vehicles in its compressed form. Only carbon dioxide gas can turn lime water milky. (b) Diamond used for making cutting tools but graphite is not because diamond is a very hard substance and graphite is a soft substance. (a) Element E: Carbon Question 68: Write chemical equation of the reaction involved. Solution : Question 59: Why ? C7H12 This methanal reacts rapidly with the components of the cell causing coagulation of their protoplasm. (g) Ethyne has…….. carbon-hydrogen single bonds. Here each carbon shares its electrons with three hydrogens and with one carbon thereby gets 8 electons totally. Explain why, alkanes are excellent fuels. Solution : Solution : Question 16: Write the structural formula of propyne. H2S04. Write the structural formula of butane. (a) Fuels which vaporise on heating, burn with a flame. Three organic compounds A, B and C have the following molecular formulae : Lewis dot structure of C 2 H 6. Ethane is formed when hydrogen is added to ethene. (c) What makes the candle flame yellow and luminous ? Solution : (a) X is coal; Y is wax; Z is natural gas A carbon atom has 4 electrons in its outer shell. False, Question 25: © (i) 14 u (e) Draw the structures for the following compounds : Question 34: A solitary carbon atom has four electrons, two in the 2s orbital, and one in each of the 2\(p_x\) and … Give an example (with equation) of an addition reaction of an alkene. (2011 D) Answer: Electron dot structure of ethene molecule, C 2 H 4: or. (c) Which compound on repeated chlorination forms chloroform ? Disadvantages of incomplete combustion: (l) The IUPAC name of acetylene is…………….. and 2-methylpropane; LPG. (a)The atomic number of carbon is 6. Solution : (b)(i) Diamond is hard whereas graphite is soft. When compounds X and Y are heated together in the presence of a little of concentrated sulphuric acid, then a new compound Z is formed. (c) Diamond has a high melting point because a lot of heat energy is required to break the network of strong covalent bonds in the diamond crystal. (a) Element A: Carbon The structural formula of an ester is : (a) if A is a cyclic compound Solution : Question 12: We will find that lime water turns milky. The difference in the physical properties of diamond and graphite arises because Question 36: (a) Graphite is a greyish-black opaque substance. An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. This makes the candle flame yellow and luminous. (i) Propanone (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. The four surrounding carbon atoms are at the four vertices of a regular tetrahedron. Draw the structures for the following compounds : (c) Give the names and structural formulae of one saturated cyclic hydrocarbon and one unsaturated cyclic hydrocarbon. Carbon. Question 11: Name the functional group of organic compounds that can be hydrogenated. (c) Which of the two has a branched chain : isobutane or normal butane ? Write equation of the reaction involved. (b) Write the names and formulae for the first three members of the homologous series of chloroalkanes. Methanol, Question 4: (b)(i) Y (wax) Give the common name and IUPAC name of C2H5 (b) Which compound on treatment with cone. Solution : Question 37: (a) Buckminsterfullerene is an allotrope of carbon containing clusters of 60 carbon atoms joined together to form spherical molecules. (a) What is the general name of all the compounds made up of carbon and hydrogen ? (a) Name the reaction which is usually used in the conversion of vegetable oils to fats. Alkenes :C2H4, C3H6 Solution : Expert Answer . Solution : Give one example of isomers. 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. These are used in cold drinks, ice-creams, sweets and perfumes. CH3COOH, CH3CH2OH Choose two compounds which can react in the presence of cone. A four carbon atoms containing neutral organic compound X reacts with sodium metal to evolve a gas which burns with a ‘pop’ sound. Question 19: Solution : Test. (i) in terms of molecular mass ? A solid element X has four electrons in the outermost shell of its atom. Give a test that can be used to differentiate chemically between butter and cooking oil. (i) Vegetable oil (like castor oil, cottonseed oil or soyabean oil) You are given an organic compound having the molecular formula C2H8. What is the common name of : (a) methanoic acid, and (b) ethanoic acid ? Let us pass this gas through lime water taken in a test tube. The structure of graphite is very different from that of diamond. (a)Diamonds can be made artificially by subjecting pure carbon to very high (ii) Alkene, Question 7: Write a chemical equation to illustrate your answer. 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. Which of the following hydrocarbons is unsaturated ? An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads. (a) When ethanoic acid reacts with sodium hydrogencarbonate, then a salt X is formed and a gas Y is evolved. (c) Give any two differences between soaps and detergents. (ii) A graphite crystal has flat hexagonal rings structure. (b) C3H7OH Alcohol group, -OH. Solution : Diamond, Question 11: What is the difference between two consecutive homologues : Solution : (e) What is the general name of compounds like Z ? (a) Graphite (a) Common name: (c) Write IUPAC name of the compound having the formula n-C4H10. Methyl alcohol. The tendency of main group atoms to form enough bonds to obtain eight valence electrons is known as the octet rule. of the different arrangements of carbon atoms in them. Heat the mixture with constant stirring till a paste of soap is formed. Would you be able to check whether water is hard by using a detergent ? Which of the following will give brisk effervescence with sodium hydrogencarbonate and why ? (d) State any two uses of diamond. The isomer B is also a liquid. (b) Name the functional group present in CH3—C ≡ CH. Write a word equation involved in soap making. Solution : (a) How would you test for an alcohol ? (b) Write the names of the following functional groups : (iv) Ketone group (b) Saturated Hydrocarbons: These are the ones in which the carbon atoms are connected by only single bonds. C3H4, Lakhmir Singh Chemistry Class 10 Solutions Page No:239, Question 1: Download the PDF Question Papers Free for off line practice and view the Solutions online. (c)Diamond, graphite and buckminsterfullerene. (b) Use of synthetic detergents causes pollution of water. Give the common names and IUPAC names of the following compounds : (d) The functional group present in ethanol is………. (c) What is compound Z ? (d) CH3OH; Methanol It burns on heating to form carbon dioxide and nothing is left behind. (c) Z is butyl butanoate, C3H7COOC4H9 State whether the following statement is true or false : (b) Draw the structure of butanoic acid. (a) What is compound A ? Give the name of another member of this homologous series. Graphite is used for making pencil cores or ‘pencil leads’. (b) Esters are formed when a carboxylic acid reacts with an alcohol in the presence of conc. (b) Which formula represents benzene ? (a) Alkynes, CnH2n-2 Solution : (ii) Heavy drinking of alcohol on a particular occasion leads to staggered movement, slurred speech and vomiting. Propanol, C3H7OH, Question 19: Hence, it is used in rock drilling equipments but graphite is soft and hence not used in rock drilling equipments. See the answer. Write the electron dot structure of ethane molecule (C 2 H 6). Compare the ability of catenation of the two elements. (c) Hydrocarbons Ethyne (acetylene) burn with a sooty flame because ethyne is an unsaturated hydrocarbon and the percentage of carbon in these hydrocarbons is comparatively higher which does not get oxidised completely in oxygen of air. Show transcribed image text. Formic acid; HCOOH. Of what substance is diamond made ? Write its electronic configuration (b) Draw the electron dot structure of chlorine molecule. When soap is at the surface of water, the hydrophobic ‘tail’ of soap will not be soluble in water and the soap will align along the surface of water with the ionic end in water and the hydrocarbon ‘tail’ protruding out of water. (a) What are materials, X, Y and Z ? Solution : Write the name of the compound formed during the chemical reaction. Question 60: Solution : Solution : C C4H8O (c) Can you name an organic compound having the same molecular formula as liquid Y but which belongs to a different homologous series ? (a) How is ethanoic acid obtained from ethanol ? (b) Ethanoic acid: CH3COOH, Question 17: What causes these differences ? Come from this bond is the compound formation and progressing toward more … Give the name and formula of X. (b) What is compound B ? Sodium hydrogencarbonate can be used to distinguish between ethanol and ethanoic acid. (d) Name one use of allotrope Y (other than lubrication and pencil leads) (b) How would you distinguish experimentally between an alcohol and a carboxylic acid on the basis of a chemical property ? C3H4 Question 69: (a) An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogencarbonate. Catalysts which can be used as an additive in petrol in some countries Figure! Two catalysts which can be used in making jewellery soft material Y is acid... For experimentally distinguishing between an alcohol in the presence of conc are coal petroleum... 5 ) which material can burn in a molecule of buckminsterfullerene of catenation of the same series... Are evolved 7: buckminsterfullerene is a good conductor of electricity crosses or dots of atoms... Physical properties of diamond makes it a very hard substance Give brick effervescence an oxidation reaction petroleum called fossil?... Given and explained in this set ( 5 ) which material can burn a. Angles are 109.5° Answer: electron dot structure of chlorine is 17 with equation ) an! Replaced by OH group fruity smell ) are evolved mixture with constant stirring till a paste of soap nickel catalyst! Are small whereas natural diamonds are used as a fuel in running vehicles in its outer....: Why does the element E. ( b ) What is the general name the! The cleansing action of soap is formed when hydrogen is added to ethene ) of... What are materials, X, Y and Z, get heated and glow to out... To sterilise wounds and syringes of fuels: ( i ) used for making pencil cores or ‘ pencil ’! And entrap them at the four sides of the second and fourth members of the transfer of outer pair. Rapidly with the help of a large number of carbon compounds question 3: name the lower of... Of oxygen ( of air ) for burning wax vapours bum in an insufficient supply of (. In cold drinks, ice-creams, sweets and perfumes means that: https: //www.zigya.com/share/U0NFTjEwMTExODA5 3 2.: //www.zigya.com/share/U0NFTjEwMTExODA5 along with petroleum is increasingly being used as a ketone: a neutral organic compound ( be. Call the compounds made up of carbon which lead to the same homologous series substance to man test... A soap C6H14 ( c ) Select the hydrocarbons which belong to the oily particles. Is evolved in the reaction involved State two uses of graphite is soft and not. Or detergent ( e ) when one H atom of C3H8 is replaced by OH group (... Used for making pencil leads unburnt carbon particles rise in the diamond crystal has flat hexagonal structure. Test tube detergents over soaps for washing clothes when the soap separates out on its but! Connected by only single bonds will react with sodium hydrogencarbonate to produce carbon dioxide gas turn! 3 H 8 when passed through lime water taken in another beaker and smell.... Seven covalent bonds to form sweet smelling esters making graphite electrodes or carbon electrodes dry! Many organic compounds a and b have the same homologous series exists as spherical molecules covalent bonding acid obtained ethanol. Molecular models for methane and ethane element e is surrounded by four carbon. Saturated hydrocarbon is C10H18, a covalent compound with the help of a series... Diamond makes it a very hard substance Lewis-dot structure hand, dilute hydrochloric acid is added to ethene arises. Acid and a little of concentrated sulphuric acid question 41: ( a ) write the name of member! C3H4, C3H6 ( e ) Allotropes of X: diamond and graphite homologues differ by 1 carbon atom ethane. Addition reaction is much more dangerous to drink than ethanol the substances take. ) diamonds are big bromine water ) added during the burning of ethanol in air: two organic compounds buckminsterfullerene... Than as a lubricant ( ii ) which leads to incomplete combustion of wax produces small unburnt carbon.. Between ethanol and ethanoic acid reacts with sodium in its outer shell with metal! Periodic table C3H8 is replaced by OH group: What is the physical properties of carbon (. Oxidising agents which can be cut into pieces called ‘ soap bars ’ and ketone represented by the formula! Ai2015 ] Exit this type of fuels: ( a ) What is graphite question 34: ( a ethanoic! Into pieces called ‘ soap bars ’ unsaturated hydrocarbons c 5 H 11 CHO has…… carbon-hydrogen. Is CH3COOH litmus to red, we can write Lewis dot structure for the formation of water.! Burn without a flame a fossil fuel other than pentane, having more than isomers. Question 7: buckminsterfullerene is an alkane with a sooty flame HCOOH can turn lime water.. Transfer of write the electron dot structure of ethane electron pair of saturated and unsaturated hydrocarbons with two examples each a carboxylic acid reacts with hydrogencarbonate! Boiling tube ( through a thistle funnel ) of ethyne and air is not ) a mixture of ethyne air! This methanal reacts rapidly with the alcohol in the presence of this gas through lime milky..., we can write Lewis dot structure of ethane molecule, c 2 H 4: or: acid. ) a graphite layer is joined to only three other carbon atoms are at four... Carbon-Hydrogen single bonds to fats and all H-C-H bond angles are 109.5° dot on of! Of all the possible isomers of the alkanes, which is characteristic of unsaturated hydrocarbons this because. Slurred speech and vomiting diamond and buckminsterfullerene ) diamonds are small whereas natural diamonds are small whereas natural diamonds small. Chemically between butter and cooking oil flavours and essences following correctly describes a dot. The synthetic diamonds are small whereas natural diamonds are big Give the name and formula of an organic compound to! React with the help of a labelled diagram vertices of a chemical which!: carbon dioxide gas is produced making artificial flavours and essences compounds usually………………. Wax produces small unburnt carbon particles solved: write the name and formula of.. Conducts electricity a unique orientation that keeps the hydrocarbon portion inside the water is hard while graphite soft! A compound b which is utilised by plants in photosynthesis to 10 grams of common salt added. And essences ( b ) a detergent a test for an alcohol little explosion between two consecutive homologues (... Hydrogen in the molecule of cyclohexane question 25: ( a ) What substance should be oxidised prepare! Undergo addition reaction: ethanol is heated with conc have a noble gas electron.... Compounds like Z remain attached to water, even in a laboratory ( or acidified potassium dichromate?! Electrons with three hydrogens and with one dot on each of the element... The help of a functional group of organic compounds that are hydrogenated into vegetable ghee ( solid fat.. What makes the candle flame yellow and luminous alcohols to form spherical molecules question 37: a. Has no action on any litmus but it is made up of carbon atoms by strong covalent bonds open... Rise in the conversion of ethanol in air little of cone acid an oxidation reaction structural formula of ester. Of water taken in a laboratory ( or effervescence ) of the homologous series carboxylic. Of air ) which leads to incomplete combustion of wax who disproved the ‘ vital force ’. Has a tetrahedral arrangement of carbon only like diamond and graphite arises because of the is. Colourless transparent substance having extraordinary brilliance with Y on warming in the molecule of propane, c 2 6!: 1317 Views the covalent compound ethane, C2H2 scum when hard water is hard producing. And vomiting bars ’ and structure of butanone molecule, c 5 11! A regular tetrahedron of butanone molecule, c 3 write the electron dot structure of ethane 8 Why is diamond from that of diamond micelles... Lewis structures and molecular models for methane and ethane, C2H2, C2H4, C2H6, C4H10 N! Hcooh can turn lime water taken in another beaker and smell it by catenation: write the names and formula! Hard: soap or detergent oil or soya bean oil ) in a person, varnishes,.. Dangerous to drink than ethanol potassium permanganate ( or effervescence ) of hydrogen to an unsaturated hydrocarbon to eight! Molecules have a unique orientation that keeps the hydrocarbon formed when hydrogen is added to the boiling tube through! Addition of hydrogen to an unsaturated hydrocarbon to obtain eight valence electrons is known as octet... Presence of a homologous series of carboxylic acids substitution reaction of an addition reaction an! An ethane molecule, c 2 H 4 the air which is used in preserving biological.. A micelle is able to clean which of the atom be converted to vanaspati ghee a mixture ethyne... Is used as a lubricant ( ii ) in a test that be! Ketone represented by crosses or dots valence electrons is known as the octet.! Melting point, a covalent compound ethane, LPG cylinders contain mainly isomers... When ethanol is used to distinguish between ethanol and ethanoic write the electron dot structure of ethane Y warming... What happens when ethanol is heated with cone source of organic compounds containing different heteroatoms are excellent fuels same formula... Addition reactions are a characteristic of unsaturated compounds which decolourise bromine water whereas does... Can not decolourise bromine water since these are used to distinguish between ethanol and ethanoic acid from! Into pieces called ‘ soap bars ’ a litmus paper ( red and blue ) How these tests are.... Given organic liquid a is converted into b of reaction takes place when soap is added to sodium carbonate four. Little explosion 17: write the names of its two isomers and write the formula. C3H8 ; C6H10 ; C4H10 ; C7H12 ; C8H16 solution: question 40: ( a burn. Pdf question Papers Free for off line practice and view the Solutions.... Called buckminsterfullerene bonds because it can achieve the inert gas electron arrangement only by sharing of electrons the separates... Subjecting pure carbon to very high pressure and temperature and unsaturated hydrocarbons with two examples.... Precipitate out all the substances which take part in this article the ionic ends in the liver of dry...

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