Two carbon compounds X and Y have the molecular formula C4H8 and C5H12 respectively. Which one of these is most likely to show addition reaction? Justify your answer. Also, give the chemical equation to explain the process of addition reaction in this case.
OR
Complete the following chemical equations:
i. CH3COOC2H5 + NaOH →
ii. CH3COOH + NaOH →
iii. C2H5OH+CH3COOH 
We know that alkenes give addition reaction and C4H8 is alkene so C4H8 will give addition reaction.
CH3CH2=CH2CH3 + H2→ CH3CH2CH2CH3
OR
(i) When Ethyl acetate (CH3COOC2H5) reacts with NaOH, then sodium acetate (CH3COONa) and ethanol (C2H5OH) are formed.
CH3COOC2H5 + NaOH → CH3COONa + C2H5OH
(ii) When acetic acid (CH3COOH) reacts with NaOH, then sodium acetate (CH3COONa) and water are formed.
CH3COOH + NaOH → CH3COONa + H2O
(iii) When acetic acid (CH3COOH) and ethanol (C2H5OH) reacts then ethyl acetate (CH3COOC2H5) and water are formed.
CH3COOH + C2H5OH 
CH3COOC2H5 + H2O