Assertion(A) : The addition of an inert gas under constant volume condition causes the total pressure of the system to increase. This would thus lower the degree of dissociation of $PCl_{5}$ .
Reason(R) : Addition of inert gas at equilibrium increases the kinetic energy of molecules.

Question

Assertion(A) : The addition of an inert gas under constant volume condition causes the total pressure of the system to increase. This would thus lower the degree of dissociation of $PCl_{5}$ .

Reason(R) : Addition of inert gas at equilibrium increases the kinetic energy of molecules.

TestHub · Accepted Answer

Assertion is false: At constant volume, adding an inert gas increases total pressure but does not change partial pressures of reactants/products. Thus, the equilibrium position and degree of dissociation of PCl 5 ​ remain unchanged. Reason is false: Adding an inert gas does not change the kinetic energy of molecules as temperature is constant.

Chemistry - Chemical Equilibrium Question with Solution | TestHub

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JEE Main 2027 (Class 12+)