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Equilibrium constants are given (in atm)...

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 humidities will `Na_2SO_4` be deliquescent (i.e. absorb moisture) when exposed to the air at `0^@C` ?

A

above 33.33%

B

below 33.33%

C

above 66.66%

D

below 66.66%

Text Solution

Verified by Experts

The correct Answer is:
A
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