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For the equilibrium CuSO(4)xx5H(2)O(s)hA...

For the equilibrium `CuSO_(4)xx5H_(2)O(s)hArrCuSO_(4)xx3H_(2)O(s) + 2H_(2)O(g)`
`K_(p) = 2.25xx10^(-4)atm^(2)` and vapour pressure of water is `22.8` torr at 298 K. `CuSO_(4)` . `5H_(2)O(s)` is efflorescent (i.e., losses water) when relative humidity is :

A

less than 33.3%

B

less than 50 %

C

less than 66.6%

D

above 66.6%

Text Solution

Verified by Experts

The correct Answer is:
B
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