an organic compound 'X' on heating with conc H2SO4 fors a compound 'Y' which on addition of nickel forms - Science - Heredity and Evolution

Question

an organic compound 'X' on heating with conc H2SO4 fors a
compound 'Y' which on addition of nickel forms a compound 'Z' One
molecule of compound One molecule of compound 'Z'on combustion
forms two molecules of CO2 and three molecules of H2O identify
giving reasons the compound X ,Y, and Z write a chemical for all
the reactions involved

Urvashi Yadav · Accepted Answer

We are given that the compound Y on addition of one mole of H₂ in the presence of Ni forms another compound. This suggests that the compound Y is unsaturated. Since the compound Y is formed by dehydration of compound X by using H₂SO₄, it means that compound X is an alcohol. Compound Z will be alkane (alkenes on hydrogenation give alkanes). As compound Z gives two molecules of CO₂ and three molecules of H₂O, it means that it is an alkane containing two carbon atoms. Thus

Compound X = CH₃CH₂OH

Compound Y = CH₂=CH₂

Compound Z = CH₃-CH₃

Following are the chemical equations for the reactions

$C H_{3} C H_{2} O H \to_{443 K}^{c o n c H_{2} S O_{4}} C H_{2} = C H_{2}$

$C H_{2} = C H_{2} + H_{2} \to_{H_{2}}^{N i c k e l c a t a l y s t} C H_{3} - C H_{3}$

${2 C}_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O + h e a t + l i g h t$