Question

the temperature of a liquid is increased by 25°c. the vapor pressure of the liquid ______.

either increases or decreases depending on the liquid
decreases
remains the same
increases

Explanation:

Analyze temperature effect on kinetic energy

Increasing temperature increases the average kinetic energy of the liquid molecules.

Relate kinetic energy to vaporization rate

More molecules gain sufficient energy to overcome Intermolecular Forces and escape into the gas phase.

Determine vapor pressure change

An increased rate of evaporation leads to a higher concentration of gas molecules, which increases the vapor pressure.

Answer:

• either increases or decreases depending on the liquid
• decreases

<mcq-option>remains the same</mcq-correct>

• increases (Correct answer)