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MHT CET202619 April 2026Morning ShiftChemistryThermodynamics (C)Actual

Identify from following, the relation between standard free energy change in a reaction and equilibrium constant K_c .

Options

  1. AG^ = RT K_c
  2. B- G^ = RT K_c
  3. CG^ = K_c RT
  4. D- G^ = RT K_c

Correct answer

D. - G^ = RT K_c

Step-by-step solution

The relation between the free energy change and the reaction quotient is given by G = G^ + RT Q . At equilibrium, the free energy change G = 0 and the reaction quotient Q = K_c . Substituting these values into the equation, we get 0 = G^ + RT K_c . Rearranging the terms yields - G^ = RT K_c . Answer: - G^ = RT K_c

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