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MHT CET202525 Apr 2025Evening ShiftChemistryThermodynamics (C)Actual

For a certain reaction, H =-210 ~kJ and S =-150 ~J ~K ⁻¹ Find the temperature so that G =0

Options

  1. A1100 K
  2. B1200 K
  3. C1400 K
  4. D1300 K

Correct answer

C. 1400 K

Step-by-step solution

The temperature where G = 0 is determined by the Gibbs-Helmholtz equation G = H - T S . Given H = -210 , kJ and S = -150 , J ,K⁻¹ , first convert the enthalpy to consistent units: H = -210000 , J . Setting G = 0 yields 0 = H - T S , which rearranges to T = H S . Substituting values gives T = -210000 , J -150 , J ,K⁻¹ = 1400 , K . C

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