What is the change in enthalpy for an isothermal process?
Practice Questions
Q1
What is the change in enthalpy for an isothermal process?
Zero
Positive
Negative
Depends on the system
Questions & Step-by-Step Solutions
What is the change in enthalpy for an isothermal process?
Correct Answer: Zero
Step 1: Understand what an isothermal process is. It is a process that occurs at a constant temperature.
Step 2: Know that enthalpy is a measure of the total energy of a system, including internal energy and the energy required to make room for it (pressure-volume work).
Step 3: For an ideal gas, the enthalpy depends only on temperature.
Step 4: Since the temperature does not change in an isothermal process, the enthalpy also does not change.
Step 5: Therefore, the change in enthalpy (ΔH) for an isothermal process is zero.
