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Q.

Statement I  : Addition of argon gas to PCl5(g)PCl3(g) + Cl2(g) - 124 kJ/mole system at constant volume favours farward reaction

Statement II : Endothermic reactions are fvourable at high temperatures

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a

Statement I is correct and statement II is incorrect

b

Statement I is incorrect and statement II is correct

c

Both statement I and statement II are correct

d

Both statement I and statement II are incorrect

answer is B.

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Detailed Solution

Addition of inert gas to equilibrium system at constant volume does not alter the equilibrium position as inter gas doesn't change the partial pressures of reactants and products.

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Statement I  : Addition of argon gas to PCl5(g)⇌PCl3(g) + Cl2(g) - 124 kJ/mole system at constant volume favours farward reactionStatement II : Endothermic reactions are fvourable at high temperatures