Question

Which of the following is NOT an intensive property?

• A. Concentration
• B. Density
• C. Pressure
• D. Volume

Answer 1

The Correct Option is D

To determine which of the given options is NOT an intensive property, we first need to understand what intensive and extensive properties are in physical chemistry.

Intensive properties are properties that do not depend on the amount of matter or the size of the system. They are independent of the system's mass. Common examples include temperature, pressure, and density.

Extensive properties, on the other hand, do depend on the system size or the amount of matter present. They include properties like volume, mass, and total charge.

Let's analyze each of the given options:

1. Concentration: This is an intensive property because it is defined as the amount of solute per unit volume of solution and does not change with the amount of solution present.
2. Density: This is also an intensive property as it is the mass per unit volume and is independent of the amount of substance.
3. Pressure: An intensive property because it does not depend on the size of the system. It is the force exerted per unit area.
4. Volume: This is an extensive property because it varies with the size or amount of the substance in the system.

Therefore, the answer is:

Volume is NOT an intensive property but an extensive property.