Assertion :For the reaction at certain temperature $A (g) + B (g) ⇌ C (g)$ , there will be no effect by addition of inert gas at constant volume. Reason: Molar concentration of all gases remains constant.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
For the reaction at certain temperature $A (g) + B (g) ⇌ C (g)$ , there will be no effect by addition of inert gas at constant volume.
Volume is constant and the number of moles of each species are constant. Hence, the molar concentration of all gases remains constant.
Hence, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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