Solids, Liquids, and Gases

AP Chemistry· difficulty 3/5

The vapor pressure of a liquid increases with temperature because

A
$The liquid evaporates more slowly$
B
$Molecules become heavier$
C
$More molecules have enough kinetic energy to escape into the gas phase$
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D
$Random$

Explanation

Higher T → broader distribution of molecular speeds → larger fraction can overcome IMFs and vaporize.

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