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BITSAT2016ChemistryThermodynamics (C)Actual

For a particular reversible reaction at temperature T, H and S were found to be both +ve. If T_ e is the temperature at equilibrium, the reaction would be spontaneous when

Options

  1. AT_ e >T
  2. BT>T_ e
  3. CT_ e is 5 times T
  4. DT=T_ e

Correct answer

B. T>T_ e

Step-by-step solution

At equilibrium G=0 array l Hence, G= H-T_ e S=0 H=T_ e S or T_ e = H S array For a spontaneous reaction G must be negative which is possible only if H-T S H S ; T_ e

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