Question

Place the following substances in order of increasing vapor pressure at a given temperature.

a. NF3,
b. NH3,
c. BCl3.

Answer 1

To arrange the substances in order of increasing vapor pressure: BCl3, NH3, NF3.

Step-by-step explanation:

The vapor pressure of a substance at a given temperature is a measure of how easily it evaporates. The higher the vapor pressure, the more volatile the substance is. To arrange the substances in order of increasing vapor pressure:

1. BCl3
2. NH3
3. NF3

The order is based on the size and strength of the intermolecular forces present in each substance. BCl3 has the lowest vapor pressure because it forms a network of solid molecules held together by strong covalent bonds. NH3 has a higher vapor pressure as it has weaker hydrogen bonding between its molecules. NF3 has the highest vapor pressure as it has the weakest London dispersion forces between its molecules.