Assertion :The value of the van der Waals' constant $^{'} a^{'}$ is larger for ammonia than for nitrogen. Reason: Hydrogen bonding is present in ammonia.

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Assertion
The value of the van der Waals' constant ′a′ is larger for ammonia than for nitrogen.
Reason
Hydrogen bonding is present in ammonia and absent in nitrogen. This results in higher inter-molecular attractive forces in ammonia than in nitrogen.

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

Note:
The van der Waals' constant 'a' is a proportionality constant called coefficient of attraction. It refers to the pressure correction. Its value depends on the nature of the gas. It corrects for the attractive forces present in a real gas in the van der Waals' equation.

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