1.

Equilibrium constants are given (in atm) for the following reactions at 0^(@)C : SrCl_2 . 6H_2O(s) hArr SrCl_2 . 2H_2O(s)+4H_2O(g) K_p=5xx10^(-12) Na_2HPO_4 . 7H_2O(s)+5H_2O(g) K_p=2.43xx10^(-13) Na_2SO_4 . 10H_2O(s) hArr Na_2SO_4(s)+10H_2O(g) K_p=1.024xx10^(-27) The vapour pressure of water at 0^@C is 4.56 torr. Which is the most effective drying agent at 0^@C ?

Answer»

`SrCl_2 . 2H_2O`
`Na_HPO_4 . 7H_2O`
`Na_2SO_4`
All equally

Answer :A


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