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Equilibrium constant for the following e...

Equilibrium constant for the following equilibrium is given at `)^(@)C` . `Na_(2)HPO_(4)` . `12H_(2)O(s) hArrNa_(2)HPO_(4)` . `7H_(2)O(s) + 5H_(2)O(g)` `K_(p) = 31.25xx10^(-13)`. At equilibrium what will be partial pressure of water vapour:

A

`(1)/(5)xx10^(-3)"atm"`

B

`0.5xx10^(-3)"atm"`

C

`5xx10^(-2)"atm"`

D

`5xx10^(-3)"atm"`

Text Solution

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The correct Answer is:
D
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