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. At what relative humidity will Na_2SO_4 . 10H_2O be efflorescent when exposed to air at 0^@ C?

Equilibrium constants are given (in atm) for the following reactions a

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. At what relative humidity will Na_2SO_4 . 10H_2O be efflorescent when exposed to air at 0^@ C?
Answer» above 33.33% below 33.33% above 66.66% below 66.66% ANSWER :B