For the equilibrium- SrCl-2- 6H-2O-s- rightleftharpoons SrCl-2-2H-2O-s- - 4H-2O-g- K-p-8-1 times 10-7- atm-4 27-oC - If 1-642L of air saturated with water vapour 27-oC is exposed to a large quantity of of SrCl-2-2H-2O-s- what weight of water vapour will be absored - Saturated vapour pressure of water 27-oC-30-4 torr-

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Standard XI

Chemistry

Equilibrium in Physical Processes

Question

For the equilibrium: $$ SrCl_2. 6H_2O(s) \rightleftharpoons SrCl_2.2H_2O(s) + 4H_2O(g), K_p=8.1 \times 10^{-7} atm^4\ at \ 27^oC $$. If 1.642L of air saturated with water vapour at $$ 27^oC $$ is exposed to a large quantity of of $$SrCl_2.2H_2O(s)$$, what weight of water vapour will be absored ? Saturated vapour pressure of water at $$ 27^oC=30.4 $$ torr.

12 mg

9 mg

48 mg

6.67 mg

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Solution

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Correct option is A. 12 mg

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