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Question

The equilibrium constants KP1 and KP2 for the reaction X2Y and ZP+Q, respectively are in the ratio of 1:9. If the degree of dissociation of X and Z be equal then the ratio of total pressure at these equilibria is:

A
1:36
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B
1:1
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C
1:3
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D
1:9
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Solution

The correct option is A 1:36
Let us consider the problem.
X1(1x)202xY
For,
Kp1=(2x)2(1x)(P11+x)
Hence,
Z(1x)P0x+Q0x
For,
Kp2=(x)2(1x)(P11+x)1
4×P1P2=136
P1P2=136

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