medium · MCAT chem-phys
When ammonium nitrate (NH_4NO_3) dissolves in water, the solution becomes noticeably cold, yet the process occurs spontaneously.
Which of the following must be true of the thermodynamic parameters?
- ΔH is positive and ΔS is positive.
- ΔG is positive because the reaction is endothermic.
- ΔH is negative and ΔS is negative.
- ΔH is positive and ΔS is negative.
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