Due to evaporation of a liquid, its temperature
Due to the evaporation of a liquid, its temperature will decrease. This occurs because evaporation is an endothermic process, where the liquid absorbs heat from its surroundings to transition into a gas, thereby lowering the liquid’s temperature.
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Evaporation is an endothermic process, meaning it requires heat to occur. When a liquid evaporates, molecules at the surface gain enough energy to break free from the liquid’s surface and become vapor. This energy is drawn from the liquid itself and its surroundings, resulting in a cooling effect. As these higher-energy molecules leave the liquid, the average kinetic energy of the remaining molecules decreases, causing the temperature of the liquid to drop.
Among the given options:
– [A] will increase is incorrect as evaporation removes energy from the liquid.
– [B] will decrease is correct as evaporation causes the liquid’s temperature to drop.
– [C] will increase rapidly is incorrect and contradicts the cooling effect of evaporation.
– [D] will remain unchanged is incorrect as evaporation leads to a temperature decrease.
Therefore, the correct answer is [B] will decrease.