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AP EAMCET202524 May 2025Morning ShiftChemistryThermodynamics (C)Actual

If _r H ^ and _r ~S ^ are standard enthalpy change and standard entropy change respectively for a reaction, the incorrect option is

Options

  1. A_r H ^ = negative; _r ~S ^ = positive; spontaneous at all temperatures
  2. B_r H ^ = negative; _r ~S ^ = negative; non-spontaneous at low temperatures
  3. C_r H ^ = positive; _r ~S ^ = positive; non-spontaneous at low temperatures
  4. D_r H ^ = negative; _r ~S ^ = negative; spontaneous at low temperatures

Correct answer

B. _r H ^ = negative; _r ~S ^ = negative; non-spontaneous at low temperatures

Step-by-step solution

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