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Question
Extensive properties depend on the quantity of matter but intensive properties do not. Explain whether the following properties are extensive or intensive.
Solution
A contrast is drawn in thermodynamics between extensive and intense qualities. An extensive property is one whose value is proportional to the amount or size of matter in the system. Extensive properties include mass, volume, internal energy, enthalpy, and heat capacity, to name a few.
Properties that are independent of the amount or size of matter present are known.
As though they were intensive properties Temperature, density, and pressure, for example, are intense properties. A molar property, 𝝌m, is the value of an extensive property of the system for 1 mol of the substance. If n is the amount of matter, 𝝌m = 𝝌/n, is independent of the amount of matter. An intensive property is always the ratio of two extensive properties.
Extensive/Extensive = Intensive.
E.g., Mole Fraction = Moles/Total number of moles = Extensive/Extensive.
