Chemistry · The first law of thermodynamics: Concept of work, heat, internal energy and enthalpy, heat capacity, molar heat capacity
When heat is given to gas in an isothermal change, the result will be
When heat is given to gas in an isothermal change, the result will be
- A. external work done
- B. rise in temperature
- C. increase in internal energy
- D. external work done and also rise in temperature
Step-by-step solution
In an isothermal process, temperature remains constant, so internal energy for an ideal gas does not change (ΔU = 0). From the first law of thermodynamics (ΔU = Q - W), we get Q = W. Hence, heat supplied is completely converted into external work done by the gas.
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