Enthalpy of vaporization - Wikipedia
网页In thermodynamics, the enthalpy of vaporization (symbol ∆Hvap), also known as the (latent) heat of vaporization or heat of evaporation, is the amount of energy (enthalpy) that must be added to a liquid substance to transform a quantity of that substance into a gas.
Heat of Vaporization - Chemistry LibreTexts
网页2023年1月30日 · Learn the definition, formula and examples of heat of vaporization, the enthalpy change of a liquid to a gas. Also, find out the opposite process of condensation and how to calculate the heat involved.
蒸发热 - 百度百科
网页溶液的蒸发 (evaporation)通常是指通过加热使溶液中一部分溶剂汽化，以提高溶液中非挥发性组分的浓度 (浓缩)或使溶质从溶液中析出结晶的过程。 通常，温度越高、液面暴露面积越大，蒸发速率越快；溶液表面的压强越低，蒸发速率越快。 [1] 蒸发热简介. 播报. 编辑. 单位 质量 的某种液体变成气体时所吸收的 热量，叫做这种气体的蒸发热。 蒸发热又叫 汽化热，与 熔化热 、 升华热 统称为 相变热 或 潜热 (latent heat)。
Heat of Vaporization - Definition, Equation and Quiz - Biology …
网页2019年6月17日 · Heat of Vaporization Definition. Also known as enthalpy of vaporization, the heat of vaporization (∆H vap) is defined by the amount of enthalpy (heat energy) that is required to transform a liquid substance into a gas or vapor. It is measured in Joules per mole (J/mol), or sometimes in Calories (C).
Water - Heat of Vaporization vs. Temperature - The Engineering …
网页Find the heat of vaporization of water at different temperatures and vapor pressures, using online calculator, figures and tables. The heat of vaporization is the energy required to transform liquid water into gas, and it decreases with increasing temperature.
Specific heat, heat of vaporization, and density of water (article ...
网页Specific heat capacity and heat of vaporization of water. Evaporative cooling. Why ice floats.
17.11: Heats of Vaporization and Condensation
网页Learn how to calculate the heat of vaporization and condensation of a substance, and how they relate to the strength of intermolecular forces. See examples, values, and applications of these concepts in thermochemistry.
Heat of vaporization | chemistry | Britannica - Encyclopedia …
网页Heat of vaporization is the amount of energy needed to change a liquid to a gas at constant temperature and pressure. Learn how it differs from heat of fusion and heat of sublimation, and see how it affects water and other substances.
2.13: Water - Heat of Vaporization - Biology LibreTexts
网页Water has a heat of vaporization value of 40.65 kJ/mol. A considerable amount of heat energy (586 calories) is required to accomplish this change in water. This process occurs …
10.3: Energy and Phase Changes - Chemistry LibreTexts
网页Learn about the heat of fusion and vaporization, and how they relate to freezing and condensation. Find out the molar and specific heats of these phase transitions, and how to calculate them using heating curves.
跳至内容