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In the presence of excess of anhydrous (...

In the presence of excess of anhydrous ( in torr) of water taken up is governed by `K_(p)=10^(12)atm^(-4)` for the following reaction at `273K`
`SrCl_(2).2H_(2)O(s)+4H_(2)O(g)hArrSrCl_(2).6H_(2)O(s)`
What is equilibrium vapour pressure ( in torr) of water in a closedvessel that contains `SrCl_(2).2H_(2)O(s)` ?

A

`0.001 ` torr

B

`10^(3)` torr

C

`0.76` torr

D

`1.31 ` torr

Text Solution

Verified by Experts

The correct Answer is:
3
`K_(p)=(1)/(P_(H_(2)O(g))^(2))" "rArr" "P_(H_(2)O(g))=((1)/(K_(p)))^(1//4)`
`rArr(10^(-17))^(1//4)=10^(-3)atm.`
`:. K_(p)=10^(-3)xx760=0.76` torr
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