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Why does liquid evaporate faster when gas is blown over it?

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For me, the most intuitive explanation of this phenomenon involves equilibrium. If you set a glass of water on a counter in contact with normal air, there is water in the glass (in liquid form) and water in the air (in gas form, i.e. water vapor). read more

In general, hotter water is more likely to transition into the air, which is why hotter water evaporates more quickly. Now to the issue of blowing on the glass of water. As the liquid water evaporates, those water molecules don't just disappear, they stick around in the air around the glass of water. read more

Generally, a liquid with a higher vapor pressure will evaporate more quickly that a liquid with lower vapor pressure, at the same given conditions. Please note that this answer is correct for PURE liquids, and non-pure liquids such as solutions may behave differently. read more

Why evaporation occurs. Heat (energy) is necessary for evaporation to occur. Energy is used to break the bonds that hold water molecules together, which is why water easily evaporates at the boiling point (212° F, 100° C) but evaporates much more slowly at the freezing point. read more

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