The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid [1] [2] and the liquid changes into a vapor. The boiling point of a liquid varies depending upon the surrounding environmental pressure.

2022年5月25日 · The standard boiling point, as defined by the IUPAC in 1982, is the temperature at which boiling occurs when the pressure is 1 bar. The standard boiling point of water is 99.61 °C at 1 bar of pressure.

2020年8月6日 · The boiling point of water is the temperature where the liquid’s vapor pressure equals atmospheric pressure. The reason boiling point changes with elevation is because atmospheric pressure changes. The effect is noticeable when you compare boiling point in a valley compared to a mountain top.

2025年1月11日 · Boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapor of the liquid; under this condition, addition of heat results in the transformation of the liquid …

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What is a boiling point? The boiling point of a substance is the temperature at which the vapor pressure of the liquid is equal to the surrounding atmospheric pressure, thus facilitating transition of the material between gaseous and liquid phases.

2023年1月30日 · Boiling is the process by which a liquid turns into a vapor when it is heated to its boiling point. The change from a liquid phase to a gaseous phase occurs when the vapor pressure of the liquid is equal to the atmospheric pressure exerted on the liquid.

2023年7月15日 · If this pressure is the standard pressure of 1 atm (101.3 kPa), then the temperature at which the liquid boils is referred to as its normal boiling point. This is the boiling point which is usually quoted in chemical literature.

2024年1月21日 · In this article, we will learn about the melting point, boiling point definition, their characteristics, factors affecting them, and boiling and melting point of some commonly known elements. Table of Content

What is the Boiling Point of Water? Water boils at 212°F at sea level, but only at sea level. Changes in atmospheric pressure will alter the temperature at which water boils. To use this calculator you will need your current pressure* and elevation. *This calculator uses adjusted barometric pressure as typically reported by airports and news ...