Question

An organic compound 'X' on heating with conc. H2SO, forms a compound 'Y' which on addition
of one molecule of hydrogen in the presence of nickel forms a compound Z. One molecule of
compound 'Z' on combustion forms two molecules of CO2 and three molecules of H2O. Identify
giving reasons the compounds 'X', 'Y' and 'Z'. Write the chemical equations for all the chemical
reactions involved.
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CBSE - 10 - BOARD SCIENCE - ​

Answer 1

Answer:

X is ethanol Y is ethene and Z is ethane

Explanation:

C2H6 + 7/2O2 -----> 2CO2 + 3H2O

Combustion of ethane gives 2 molecules of CO2 and 3 molecules of H2O. So, according to question Z is ethane.

Z (ethane) is formed on reduction of Y in the presence of nickel(as catalyst).                    

C2H4  + H2 -----> C2H6

 

ethanol with a large quantity of concentrated sulphuric acid on heating produces ethene.

CH3-CH2-OH -------> CH2=CH2 + H2O

Therefore, X is ethanol, Y is ethene and Z is ethane.

hope it helps u

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Answer 2

Answer:X is ethanol C2H5OH

Y is Ethene C2H4

Z is ethane C2H6

Reactions:

1) C2H5OH heating with conc.H2SO4 give C2H4

2) C2H4 +H2 in the presence of nickel give C2H6

3) C2H6 +O2 give CO2+H2O

May be this will help you!!!!!