Why does temperature affect how much water vapor the air can “hold”.

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Why does temperature affect how much water vapor the air can “hold”.

In: Chemistry

Higher temperatures expand the air (molecules move further apart from other) allowing more room for water vapour between them.

Think of it instead as affecting the water instead of the air. Higher temperatures make the water molecules jiggle harder, so that of two water molecules happen to stick together, they’ll soon jiggle apart. At lower temperatures, the molecules jiggle less, so they stick together more, and droplets can form.