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BITSAT2015ChemistryThermodynamics (C)Actual

A spontaneous reaction is impossible if

Options

  1. Aboth H and S are negative
  2. Bboth H and S are positive
  3. CH is negative and S is positive
  4. DH is positive and S is negative

Correct answer

D. H is positive and S is negative

Step-by-step solution

G = H - T S ; G is positive for a reaction to be non-spontaneous when H is positive and S is negative.

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