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Evaporation rate depends on the temperature of the liquid, how tightly the liquid molecules bond to each other, the surface area of the liquid, and the temperature, pressure, and air movements in the surroundings into which evaporation occurs.

The warmer the liquid, the faster the evaporation rate. The stronger the molecules bond to each other, the slower the evaporation rate. The larger the exposed surface, the faster the evaporation rate. The colder the surroundings, the faster the evaporation rate. The lower the atmospheric pressure above the liquid, the faster the evaporation rate. The faster the air above the liquid moves, the faster the evaporation rate.

The presence of a solute of lower or negligible vapor
pressure reduces the vapor pressure and consequently tends to REDUCE the evaporation rate. So, for example, the evaporation rate of water from salt water will be somewhat less than from fresh water (again, other factors being the same).

Betlehem Semahge

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15y ago

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