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JEE Main levelOne or more correct optionsDifficulty 2 of 3ce033

For $PCl X_{5} (g) PCl X_{3} (g) + Cl X_{2} (g)$ at constant temperature, which changes increase the degree of dissociation of $PCl X_{5}$ at the new equilibrium?

AAdding $PCl X_{3}$ at constant volume
BIncreasing the volume of the container
CRemoving $Cl X_{2}$ from the vessel
DCompressing the gas mixture

Answer: B, C

Added

PCl X_{3}

pushes the reaction backward, lowering the dissociation. Increasing the volume lowers pressure and favours more gas moles (forward). Removing

Cl X_{2}

makes

Q_{c} < K_{c}

, so the reaction goes forward. Compression favours

PCl X_{5}

.

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