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MMLU-Pro / 3987 / When potassium perchlorate, KClO4, dissolves in water, the temperature of the…

Problem

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question

When potassium perchlorate, KClO4, dissolves in water, the temperature of the resultant solution is lower than the initial temperature of the components. Which of the following conclusions may be related to this?

category

chemistry

options

  1. This process is non-spontaneous and exothermic.
  2. This process is spontaneous because it is endothermic.
  3. This is a spontaneous process because of an entropy increase.
  4. This is a spontaneous process because it is exothermic.
  5. This process is non-spontaneous due to an entropy increase.
  6. This is a spontaneous process because of an entropy decrease.
  7. This is a non-spontaneous process because it is endothermic.
  8. The process is spontaneous and doesn't involve any heat exchange.
  9. This is a non-spontaneous process due to an entropy decrease.

src

ori_mmlu-high_school_chemistry

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Source and history

Official source

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