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Assertion: The value of van der Waals co...

Assertion: The value of van der Waals constant a is larger for ammonia than for nitrogen.
Reason: Hydrogen bonding is present in ammonia.

A

If both (`A`) and (`R`) are correct and (`R`) is the correct explanation of (`A`).

B

If both (`A`) and (`R`) are correct, but (`R`) is not the correct explanation of (`A`).

C

If (`A`) is correct, but (`R`) is incorrect.

D

If (`A`) is incorrect, but (`R`) is correct.

Text Solution

Verified by Experts

Both assertion and reason are correct and reason is the correct explanation for assertion. The value of van der Waals constant `a` is larger for ammonia than for nitrogen.
Nitrogen is a non-polar molecule. Ammonia is a polar molecule and it shows hydrogen bonding.
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Knowledge Check

  • In the following question, a statement of assertionn is followed by a statement of reason. Mark the correct choice. Assertion: Greater the value of van der waals constant 'a' easier is the liquifaction of a gas. Reason: 'a' indirectly measures the magnitude of attractive forces between the molecules.

    A
    both assertion and reason are true and reason is the correct explanationn of assertion
    B
    both assertionn and reason are true but reason is not the correct explanation of assertion
    C
    Assertionis true but reason is false.
    D
    both assertion and reason are false.

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