Question: In an isothermal process, the change in internal energy of an ideal gas is:
Options:
Positive
Negative
Zero
Depends on the amount of gas
Correct Answer: Zero
Solution:
In an isothermal process for an ideal gas, the temperature remains constant, hence the change in internal energy is zero.
In an isothermal process, the change in internal energy of an ideal gas is:
Practice Questions
Q1
In an isothermal process, the change in internal energy of an ideal gas is:
Positive
Negative
Zero
Depends on the amount of gas
Questions & Step-by-Step Solutions
In an isothermal process, the change in internal energy of an ideal gas is:
Correct Answer: Zero
Step 1: Understand what an isothermal process is. It is a process where the temperature of the system remains constant.
Step 2: Know that for an ideal gas, the internal energy depends only on temperature.
Step 3: Since the temperature does not change in an isothermal process, the internal energy also does not change.
Step 4: Therefore, the change in internal energy is zero.
Isothermal Process – An isothermal process is a thermodynamic process in which the temperature of the system remains constant.
Internal Energy of Ideal Gas – For an ideal gas, the internal energy is a function of temperature; thus, if the temperature is constant, the internal energy does not change.
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