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Assertion : The HF(2)^(-) ion exists in ...

Assertion : The `HF_(2)^(-)` ion exists in the solid state & also in liquid state but not in aqueous state.
Reason : The magniture of hydrogen bonds among HF molecules is weaker than that in between `HF and H_(2)O`.

A

If assertion is true but the reason is false

B

If assertion is false but reason is true

C

If both assertion and reason are true and the reason is the correct explanation of assertion

D

If both assertion and reason are true and the reason is not the correct explanation of assertion

Text Solution

Verified by Experts

The correct Answer is:
C
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How is hydrogen bond formed ? Give hydrogen bonding in (i)H_(2)O(ii)HF molecules.

The HF_(2)^(Θ) ion solid state and in liquid HF but not in the dilute aqueous solution Energy of H-bond is maximum in .

Knowledge Check

  • Assertion. The HF_(2)^(-) ion exists in the solid state and also in liquid state but not in aqueous solution. Reason. The magnitude of hydrogen bonds in between HF-HF molecule is weaker than that in between HF and H_(2)O molecules.

    A
    If both assertion and reason are true, and reason is the correct explanation of the assertion.
    B
    If both assertion and reason are ture, but reason is not the correct explanantion of the assertion.
    C
    If assertion is true, but reason is false.
    D
    If both assertion and reason are false

  • Assertion . The HF_(2)^(-) ion exists in the solid state and also in the liquid state but not in aqueous solution . Reason . The magnitue of hydrogen bonds inbetween HF -HF moelcules is weaker than that inbetween HF and H_(2) O molecules.

    A
    If both assertion and reason are correct, and reason is the correct explanation of the assertion.
    B
    If both assertion and reason are correct , but reason is not the correct explanation of the assertion.
    C
    If assertion is correct, but reason is incorrect .
    D
    If both assertion and reason are incorrect.

  • The HF_(2)^(Θ) ion solid state and in liquid HF but not in the dilute aqueous solution In aqueous solution

    A
    `HF` forms `H_(2)F^(o+)` and `overset(Θ)H,H_(2)O` being a stronger acid than `HF`
    `H_(2)O+hArrH_(2)F^(o+)+Ooverset(Θ)H`
    B
    `HF` forms `H_(3)O^(o+)` and `F^(Θ) ,H_(2)O` being a weaker acid than `HF`
    `H_(2)O + HF hArr H_(2)O^(o+) + F^(Θ)` .
    C
    H-bonding between `HF` and `H_(2)O` is observed
    D
    No change is observed

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    The HF_(2)^(Θ) ion solid state and in liquid HF but not in the dilute aqueous solution HF_(2)^(Θ) exists in solid state and in liquid HF because HF_(2)^(Θ) ions are held together by .

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