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Chemistry · THERMODYNAMICS

हिन्दी

At dynamic chemical equilibrium for the reaction \( A + B \rightleftharpoons C + D \), what is the criterion for the Gibbs energy of the reacting mixture?

  1. Gibbs energy of the system reaches its maximum value
  2. Gibbs energy of the system is equal to the total enthalpy
  3. Gibbs energy of the system is infinite
  4. Gibbs energy of the system is minimum and \( \Delta_r G = 0 \)

Correct answer · Option 4

Gibbs energy of the system is minimum and \( \Delta_r G = 0 \)

Explanation

At equilibrium, the Gibbs free energy is minimum and any slight perturbation yields \( \Delta G = 0 \).
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