In an isochoric process, what happens to the internal energy of a gas when heat

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Question: In an isochoric process, what happens to the internal energy of a gas when heat is added?

Options:

Correct Answer: It increases

Solution:

In an isochoric process, the volume remains constant, and any heat added to the system increases the internal energy.

In an isochoric process, what happens to the internal energy of a gas when heat is added?

In an isochoric process, what happens to the internal energy of a gas when heat is added?

Step 1: Understand what an isochoric process is. It means the volume of the gas does not change.
Step 2: Know that internal energy is the energy contained within the gas due to its temperature and molecular motion.
Step 3: Recognize that when heat is added to the gas in an isochoric process, the gas cannot expand because the volume is constant.
Step 4: Since the gas cannot do work on its surroundings (because the volume is constant), all the heat added goes into increasing the internal energy of the gas.
Step 5: Conclude that in an isochoric process, adding heat increases the internal energy of the gas.

Isochoric Process – An isochoric process is a thermodynamic process in which the volume of the system remains constant.
Internal Energy – Internal energy is the total energy contained within a system, which can change with heat transfer in an isochoric process.
First Law of Thermodynamics – The first law states that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system.