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Vapor pressure of a liquid changes with …… of the liquid.A. volumeB. surface areaC. temperatureD. all of these |
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Answer» Correct Answer - C Equlibrium vapor pressure is the maximum vapor pressure a liquid exerts at a given temperature and it is a constant at constant temperature . Because the rate of evaporation increases with increasing temperaure , vapor pressures of liquids always increase as temperature increases. As long as some liquid remains in contact with the vapor , the equilibrium vapor pressure does not depend on the amount (volume of surface area ) of the liquid. The number of molecules with higher kinetic energies is greater at higher temperature , and therefore , so is the evaporation rate. Notice that the increase in vapor pressure is not linear with temperature. |
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