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Question

For the reaction,


A(s)+B(g)+Heat2C(s)+2D(g)

At equilibrium, if the pressure of B is doubled, then to re-establish the equilibrium, the factor by which concentration of D changes will be:

A
2
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B
2
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C
3
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D
3
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Solution

The correct option is B 2
A(s)+B(g)+Heat2C(s)+2D(g)

Kp=(PD)2PB ..... equation 1

When the pressure of B is doubled,
PB=2PB

Kp=(PD)22PB ........ equation 2

On comparing equation-1 and equation-2, we get-

PD=2 PD

Hence, option B is correct.

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