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CBSE Class 10 Answered

AN organic compound X on heating with conc.H2SO4 forms a compound Y which on adding of one moleclue of hydrogen in the presence of nickel forms a compound Z. one molecule of Z on combustion forms two molecules of CO2 and three molecules of H2O. identify X,Y,Z. also write their chemicl equations.
Asked by | 23 Mar, 2013, 10:08: AM
Expert Answer
Compound X forms compound Y on reaction with H2SO4. Y is undergoing addition reaction when treated with hydrogen in the presence of Nickel. So, Y is an unsaturated compound. COmpound Z undergoing combustion and forms two molecules of CO2 and 3 molecules of H2O. This hints at ethane. The reaction is:
 
 
C2H6 + 2O2 --> 2CO2 + 3H2O
 
 
So, Z os ethane. ethane is formed on hydrogenation of ethene with one molecule of hydrogen over nickel. 
 
C2H4 + H2 ------------> C2H6
 
Ethanol on dehydration with H2SO4, gives ethene
 

Answered by | 25 Mar, 2013, 06:10: AM
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