Single Choice

Which one of the following is an extensive property

AMolar volume
BMolarity
CNumber of moles
Correct Answer
DMole fraction

Solution

A property of a system, whose magnitude depends upon the amount of matter, is known as extensive property. Properties like mass, volume, internal energy, heat content, free energy, enthalpy, entropy, heat capacity, surface area, energy, etc. are dependent upon the mass of the system and are called extensive properties.

from the above only number of moles is whose magnitude depends upon the amount of matter, thus the correct answer is C.

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