Limited access

Upgrade to access all content for this subject

Ammonium nitrate, ${ NH }_{ 4 }{ NO }_{ 3 }$, is a salt that is the main component of instant cold packs. When the package is squeezed, the bag containing the water breaks, and ammonium nitrate is dissolved in an endothermic reaction. The dissolution of ammonium nitrate is spontaneous at room temperature and pressure.

Which of the following statements explains the spontaneity of the dissolution of ammonium nitrate?

A

The dissolution of ${ NH }_{ 4 }{ NO }_{ 3 }$ is enthalpically-driven only.

B

The dissolution of ${ NH }_{ 4 }{ NO }_{ 3 }$ is entropically-driven only.

C

The dissolution of ${ NH }_{ 4 }{ NO }_{ 3 }$ is both enthalpically and entropically-driven.

D

The dissolution of ${ NH }_{ 4 }{ NO }_{ 3 }$ is neither enthalpically nor entropically-driven.

Select an assignment template