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Question

The following equilibrium in a closed container N2O4(g)2NO2(g)
At a fixed temperature, the volume of the reaction container is halved. For this change, which of the following statements holds true regarding the equilibrium constant (Kp) and degree of dissociation?

A
Neither Kp and nor α changes.
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B
Both Kp and α changes.
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C
α changes
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D
Kp does not change
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Solution

The correct option is B Both Kp and α changes.
When the volume of the container is halved, the pressure is doubled. Due to this the equilibrium will shift in the backward direction which will decrease the number of moles and pressure. Hence the value of the equllibrium constant Kp and the degre of dissociation α changes.

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