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How Does Temperature Affect The Rate Of Evaporation

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Evaporation is when liquid in an open container turns into a gas. Different liquids evaporate at different rates than others. The rate of evaporations increases as the temperature increases. Evaporation may be explained by considering the attractive forces involved and the kinetic energy needed to overcome these forces. This process is the opposite of condensation. For a molecule to be converted to gas from a liquid it must have enough energy to overcome its attractive forces. In any group of molecules, the average kinetic energy is proportional to the Kelvin temperature. The kinetic energies are distributed. Some molecules have low, and some have high kinetic energies. Escape energy is the minimum kinetic energy needed for a molecules to turn from a gas to a liquid. Any kinetic energy greater than the escape energy is capable of evaporating. Surface area is a factor in evaporation, as only molecules on the surface can evaporate. 50 milliliters of a liquid of a liquid in a narrow tube will evaporate slower than 50 milliliters in a beaker. In an evaporating dish, the liquid will evaporate even more quickly. Temperature is another factor in the evaporation process. An increase in temperature increases the proportion of molecules that have kinetic energy above the escape energy. Lowering the temperature does the opposite. If the temperature of a liquid increases, then the molecules have more energy to help them escape. …show more content…

It is a volatile liquid, so when its container is left open, it evaporates quickly. The chemical formula of isopropyl alcohol is C3H8O, there are 3 carbon atoms, 8 hydrogen atoms, and 1 oxygen. Pure isopropanol evaporates faster than 70% isopropanol because pure isopropanol has a higher amount of alcohol than 70% alcohol, which is 30%

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