When the system $2 H I (g) ⇌ H_{2} (g) + I_{2} (g)$ is at equilibrium. if an inert gas is introduced, then dissociation of HI is will

positive change

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negative change

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not change

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none of these

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Solution

The correct option is B not change
When the system $2 H I (g) ⇌ H_{2} (g) + I_{2} (g)$ is at equilibrium. if inert gas is introduced,then dissociation of HI is will not change . For the above reaction, $Δ n = 1 + 1 - 2 = 0$ . There is no change in the number of moles of gaseous species. Hence, the change in pressure has no effect on the equilibrium.

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