‹ Back to the paper
Answer the following.
Write the chemical reactions carried out by Rehan and Ananya respectively.
Answer
Answer
Official answer keyEquations: $\mathrm{C_{2}H_{5}Cl} + \mathrm{KCN} \xrightarrow{\text{alcoholic}\text{,}\text{ }\text{heat}} \mathrm{C_{2}H_{5}CN} + \mathrm{KCl}$ $\mathrm{C_{2}H_{5}Cl} + \mathrm{AgCN} \xrightarrow{\text{alcoholic}\text{,}\text{ }\text{heat}} \mathrm{C_{2}H_{5}NC} + \mathrm{AgCl}$
Products: propanenitrile, isocyanoethane
Rehan (alcoholic KCN) obtains propanenitrile (ethyl cyanide), which on hydrolysis gives propanoic acid. Ananya (alcoholic AgCN) obtains isocyanoethane (ethyl isocyanide, ethyl carbylamine), which does not give the acid.
From ISC 2027 Specimen Chemistry Paper 1, question 12(i).