Ncert Exercises & Solutions

Suggest a route to prepare ethyl hydrogensulphate $({CH}_{3} - {CH}_{2} - {OSO}_{2} - OH)$ starting from ethanol $(C_{2} H_{5} OH)$ .

For preparation of ethyl hydrogensulphate

({CH}_{3} - {CH}_{2} - {OSO}_{2} - OH)

starting from ethanol

(C_{2} H_{5} OH)

, it is the two steps mechanism.

Step I Protonation of alcohol

H_{2} {SO}_{4} \to H^{+} + {}_{-}{OSO}_{2} OH

Step II Attack of nucleophile

Temperature should not be allowed to rise above 383 K, otherwise diethyl ether will be produced at 413 K or ethene at 433 K.