Engineering Board Exam Reviewer · Thermodynamics · medium

In an isothermal process of an ideal gas, the heat added is equal to:

  1. The change in internal energy
  2. The change in enthalpy
  3. Zero
  4. The work done by the gas

Answer

D. The work done by the gas

Solution

For an ideal gas at constant T, U = 0, so Q = W.

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