Which of the following conditions indicates the reaction is spontaneous?

Which of the following conditions indicates the reaction is spontaneous?
  1. $\Delta \mathrm{S} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{G}>0$ at all temperature
  2. $\Delta \mathrm{S} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{G}>0$ at low temperature
  3. $\Delta \mathrm{S}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{G} < 0$ at all temperature
  4. $\Delta \mathrm{S} < 0, \Delta \mathrm{H}>0, \Delta \mathrm{G}>0$ at high temperature

Solution

$\Delta \mathrm{S}>0, \Delta \mathrm{H} < 0, \Delta \mathrm{G} < 0$ at all temperature indicates the reaction is spontaneous.

Asked in: MHT CET 2020 (14 Oct Shift 2)

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