Suggest a route to prepare ethyl hydrogensulphate (CH_3-CH_2-OSO_2-OH) starting from ethanol (C_2H_5OH).

Suggest a route to prepare ethyl hydrogensulphate (CH_3-CH_2-OSO_2-OH)

1.	Suggest a route to prepare ethyl hydrogensulphate (CH_3-CH_2-OSO_2-OH) starting from ethanol (C_2H_5OH).
Answer» Solution :When ETHANOL is heated with conc. `H_2SO_4` at 383 K (i.e. , `110^@` C), ETHYL hydrogen sulphate is formed. `H_2SO_4 to H^(+) + underset"Hydrogen sulphate ion"(.^-OSO_2OH)` Temperature should not be allowed to rise above 383 K, otherwise diethyl ETHER will be obtained at 413 K or ethane at 433-443 K.