The dissolution of $\mathrm{KCl}$ in water is endothermic yet it dissolves in water spontaneously. Which one…

The dissolution of $\mathrm{KCl}$ in water is endothermic yet it dissolves in water spontaneously. Which one of the following best explains this behaviour?
  1. Endothermic processes are energetically favoured.
  2. The electrostatic bonds between the ions are not too strong.
  3. Energy changes have nothing to do with the dissolution processes.
  4. The entropy driving force causes the dissolution.

Solution

The entropy driving force causes the dissolution.

Asked in: JEE-TOPICTESTS-CHEMISTRY

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