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Assertion (A): The enthalpy of formation...

Assertion (A): The enthalpy of formation of `H_(2)O(l)` is greater than that of `H_(2)O(g)`.
Reason (R ) : Enthalpy change is negative for the condensation reaction `H_(2)O(g) rarr H_(2)O(l)`.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.

B

If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are False

Text Solution

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The correct Answer is:
A
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Assertion (A): Enthalpy of formation of H_(2)O(I) is greater than that of H_(2)O(g) . Reason (R ): Enthalpy change is negative for condensation reaction, H_(2)O(g) H_(2)O(I)

What will be standard enthalpy of formation of H_(2)O(l) ?

Knowledge Check

  • Statement 1 : The enthalpy of formation of H_(2)O(l) is greater than that of H_(2)O(g) in magnitude. Statement 2 : Enthalpy change is negative for the condensation reaction. H_(2)O(g) rarr H_(2)O(l)

    A
    Statement 1 is true, statement-2 is true, statement 2 is a correct explanation for statement 5
    B
    Statement 1 is true, statement 2 is true, statement 2 is not a correct explanation for statement 5
    C
    Statement 1 is true, statement 2 is false
    D
    Statement 1 is false, statement 2 is true

  • Statement-1: The enthalpy of formation of H_(2)O(l)is greater than of H_(2)O(g) in magnitude. Statement -2: Enthalpy chnge Is negative for the condensation reaction H_(2)O(g)toH_(2)O(l)

    A
    Statement-1 is True, Statement -2 is True, Statement-2 is a correct explanation for Statement-1.
    B
    Statement -1 is True ,Starement -2 is True ,Statement-2 is not a correct explanation for Statement-1
    C
    Statement-1 is True ,Statement-2 is False.
    D
    Statement-1 is False ,Statement-2 is True.

  • The heat changes for the reaction: H_(2)O_((s)) rarr H_(2)O_((l)) is known as

    A
    heat of vaporization
    B
    heat of reaction
    C
    heat of fusion
    D
    heat of formation

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    The entalphy change for the reaction , H_2O_(s) rarr H_2O _((l)) is called enthalpy of

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    For the process, H_(2)O(l) to H_(2)O(g)

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