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Which equation describes the change in internal energy for an ideal gas during a

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Question: Which equation describes the change in internal energy for an ideal gas during an isothermal process?

Options:

  1. ΔU = 0
  2. ΔU = Q + W
  3. ΔU = nC_vΔT
  4. ΔU = nRΔT

Correct Answer: ΔU = 0

Solution: 

In an isothermal process for an ideal gas, the temperature remains constant, thus the change in internal energy (ΔU) is zero.

Which equation describes the change in internal energy for an ideal gas during a

Practice Questions

Q1
Which equation describes the change in internal energy for an ideal gas during an isothermal process?
  1. ΔU = 0
  2. ΔU = Q + W
  3. ΔU = nC_vΔT
  4. ΔU = nRΔT

Questions & Step-by-Step Solutions

Which equation describes the change in internal energy for an ideal gas during an isothermal process?
  • 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 (U) 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 (ΔU) is equal to zero.
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