Home
Class 12
CHEMISTRY
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
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -3|108 Videos

  • TEST PAPERS

    ALLEN|Exercise MATHEMATICS|2 Videos

  • Thermodynamics And Thermo Chemistry

    ALLEN|Exercise All Questions|40 Videos

Similar Questions

Explore conceptually related problems

Statement-1 : All the exothermic reactions are spontaneous. And Statement-2 : For a spontaneous reaction, Delta G must be negative.

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

Knowledge Check

  • Assertion : Order of a reaction with respect to any reactant can be zero, positive negative of fractional. Reason : Rate of a reaction cannot decrease with increase in concentration of a reactant or a product.

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

    • Similar Questions

    Explore conceptually related problems

    For the process A+ B to C + D, DeltaG is positive. Comment on the spontaneity of the process.

    For an exothermic reaction to be spontaneous ( Delta S = negative)

    In an equilibrium reaction for which DeltaG^(ɵ)=0 , the equilibrium constant K should be equal to :

    Which of the following reaction is spontaneous oxidation - reduction reaction

    For a chemical reaction, the free energy change (DeltaG) is negative. The reaction is

    Assertion (A): For every chemical reaction at equilibrium, standard Gibbs enegry of the reaction is zero. Reason (R ) : At constant temperature and pressure chemical reactions are spontaneous in the direction of the decreasing Gibbs energy.

    Assertion : In a metabolic reaction with a negative DeltaG , the products contain less free energy than the reactants, energy is released and entropy increases. Such negative DeltaG reaction is spontaneous because it occurs without an input of energy .

    Home
    Profile