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NEET2001ChemistryThermodynamics (C)Actual

Which of the following is always feasible?

Options

  1. AH=T S
  2. BH (+ve), T S (-ve) and H>T S
  3. CH (-ve), T S (+ve) and H < T S
  4. DH (-ve), T S (-ve) and H>T S .

Correct answer

C. H (-ve), T S (+ve) and H < T S

Step-by-step solution

Feasibility of reaction is determined by free energy change value ( G) . G is given by Gibbs - Helmholtz equation : G= H-T S Reaction is feasible if G value is negative. Therefore, if H is negative and T S is positive then the G will always be feasible.

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