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Assertion (A): There is no reaction know...

Assertion (A): There is no reaction known for which `DeltaG` is positive, yet it is spontaneous.
Reason (R ) : For photochemical reaction, `DeltaG` is negative.

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 Assertion.

C

If Assertion is True but the Reason is False.

D

If both Assertion & Reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
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Explain the state of a reaction when DeltaG =0 .

Assertion (A): Decrease in free energy causes spontaneous reaction Reason (R ) : Spontaneous reactions are invariably exothermic.

Knowledge Check

  • Assertion : There is no reaction known for which DeltaG is positive, yet it is spontaneous. Reason : For photochemical reactions DeltaG is negative

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

  • For a chemical reaction, DeltaG will always be negative if

    A
    `DeltaH` and `TDeltaS` both are positive
    B
    `DeltaH` and `TDeltaS` both are negative
    C
    `DeltaH` is negative and `TDeltaS` is positive
    D
    `DeltaH` is positive and `TDeltaS` is negative

  • For a chemical reaction, DeltaG will always be negative if,

    A
    `DeltaH` and `TDeltaS` both are positive
    B
    `DeltaH` and `TDeltaS` both are negative
    C
    `DeltaH` is negative and `TDeltaS` is positive
    D
    `DeltaH` is positive and `TDeltaS` is negative

    • Similar Questions

    Explore conceptually related problems

    For a spontaneous reaction, DeltaG should be :

    For a hypothetical reaction A+B to C if DeltaG^(@) gt 0

    Assertion (A) : Many of photochemical changes have positive sign of Delta G , yet they are spontaneous Reason (R) : The activation energy in photochemical reaction is provided by light energy.

    Assertion (A) : Photochemical reactions always occur in the presence of light. Reason (R) : Photochemical reactions do not require activation energy.

    If DeltaG is negative, the reaction will be

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