At 2270C and 4 atm, PCl5 is dissociated to an extent 50%. At same temperature, extent of dissociation of PCl5 is 0.75 at a pressure of

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1.77atm

2 atm

4 atm

8 atm

answer is A.

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Detailed Solution

α∞p- ∆ng2α1α2=p2p1 0.50.75=p24 p2=169=1.77

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