![]() ![]() Below the boiling point, the liquid is the more stable state of the two, whereas above the gaseous form is preferred. At the boiling point the two phases of a substance, liquid and vapor, have identical free energies and therefore are equally likely to exist. Any addition of thermal energy results in a phase transition. The liquid can be said to be saturated with thermal energy. The temperature at which vaporization (boiling) starts to occur for a given pressure is also known as the saturation temperature and at this conditions a mixture of vapor and liquid can exist together. The boiling point of a substance is the temperature at which this phase change (boiling or vaporization) occurs. In general, boiling is a phase change of a substance from the liquid to the gas phase. It is usually expressed as a fractional change in length or volume per unit temperature change. Thermal expansion is generally the tendency of matter to change its dimensions in response to a change in temperature. Linear thermal expansion coefficient of Oxygen is - µm/(m Coefficient of Thermal Expansion of Oxygen Note that Fourier’s law applies for all matter, regardless of its state (solid, liquid, or gas), therefore, it is also defined for liquids and gases. It is a measure of a substance’s ability to transfer heat through a material by conduction. The heat transfer characteristics of a solid material are measured by a property called the thermal conductivity, k (or λ), measured in W/m.K. Thermal conductivity of Oxygen is 0.02674 W/(m Note that, these points are associated with the standard atmospheric pressure. Thermal Properties of Oxygen Oxygen – Melting Point and Boiling Point ![]()
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