Why concn `H_2SO_4` and `CaCl_2` is not used for drying Ammonia?

Conc. H_(2)SO_(4) cannot be used for drying HBr/HI-why?

Concentrated H_(2)SO_(4) cannot be used for drying H_(2) gas__ why?

Why sodium metal cannot be used for drying alcohol?

Anhydrous CaCl_2 is used as a dehydrating agent- why?

H_2SO_4 is used for nitration of Benzene for

Among conc. H_(2)SO_(4),P_(2)O_(5),CaO and CaCl_(2) , only ______ can be used for drying NH_(3) gas in the laboratory.

Which of the following is used to dry moist ammonia?

The reaction between marble and dilute H_2SO_4 is not used to prepare CO_2 gas-why?

Anhydrone is used as a drying agent - why?

Consider the nitration of benzene using mixed conc. H_2SO_4 and HNO_3 . If a large amount of KHSO_4 is added to the mixture, the rate of nitration will be-