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ChemistryNEET 2023Entropy and Gibbs energy, spontaneity

Thermodynamics

The equilibrium concentrations of the species in the reaction A+B⇌C+D\mathrm{A + B \rightleftharpoons C + D} are 2, 3, 10 and 6 mol L−1\mathrm{mol\,L^{-1}}, respectively, at 300 K. ΔG∘\Delta G^\circ for the reaction is (R=2R = 2 cal/mol K):

  1. A.1372.60 cal
  2. B.–137.26 cal
  3. C.–1381.80 cal✓
  4. D.–13.73 cal

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