Question

based on the strength of their intermolecular forces, how does the boiling point of ch₃ch₂ch₂nh₂ compare to ch₃nh₂? ch₃ch₂ch₂nh₂ has a higher boiling point than ch₃nh₂. the boiling point of ch₃ch₂ch₂nh₂ and ch₃nh₂ cannot be determined. ch₃ch₂ch₂nh₂ has the same boiling point as ch₃nh₂. ch₃ch₂ch₂nh₂ has a lower boiling point than ch₃nh₂.

Explanation:

Both $\text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2$ (propylamine) and $\text{CH}_3\text{NH}_2$ (methylamine) are primary amines with hydrogen bonding capability. Propylamine has a longer hydrocarbon chain, increasing London dispersion forces. Stronger intermolecular forces require more energy to boil, so propylamine has a higher boiling point.

Answer:

$\text{CH}_3\text{CH}_2\text{CH}_2\text{NH}_2$ has a higher boiling point than $\text{CH}_3\text{NH}_2$