Complete the following equation and balance: C 2 H 5 OH → PCl 5 A → KCN B → H 3 O + C → NH 3 D

In the first step, ethanol undergoes alkylation on reacting with phosphorus pentachloride to give ethyl chloride. The reaction is: C 2 H 5 OH → PCl 5 C 2 H 5 Cl + POCl 3 + HCl Ethyl chloride reacts with alcohol potassium cyanide to give ethyl cyanide and potassium chloride as products. C 2 H 5 Cl → KCN C 2 H 5 CN + KCl Further, the ethyl cyanide undergoes acid hydrolysis to give propanoic acid which reacts with ammonia to give ammonium acetate. On heating ammonium acetate we get propanamide. C 2 H 5 CN → H 3 O + C 2 H 5 COOH + HCN C 2 H 5 COOH → NH 3 C 2 H 5 COONH 4 → - H 2 O ∆ C 2 H 5 CONH 2 Propanamide The total reaction is as follows: C 2 H 5 OH → PCl 5 C 2 H 5 Cl Ethyl Chloride → KCN C 2 H 5 CN Ethyl Cyanide → H 3 O + C 2 H 5 COOH Propanoic acid → NH 3 C 2 H 5 COONH 4 Ammonium acetate → - H 2 O ∆ C 2 H 5 CONH 2 Propanamide