Introduction to Entropy

AP Chemistry· difficulty 3/5

Heat flowing from hot to cold reservoir

  • A

    Has ΔS_universe = 0

  • B

    Violates first law

  • C

    Decreases ΔS_universe

  • D

    Increases ΔS_universe

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Explanation

|ΔS_cold| (gain at low T) exceeds |ΔS_hot| (loss at high T), giving net ΔS > 0.

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