The internal energy of a system during an isothermal process:
Correct answer: D. Remain constant
- A. Decreases
- B. Increases
- C. Becomes zero
- D. Remain constant
Explanation
In an isothermal process the internal energy remains constant so the temperature remains constant.In an Isobaric process,the pressure remains constant.In adiabatic processes, the heat transfer is zero.In an isoenthalpic process, the enthalpy remains constant.
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About First Law of Thermodynamics
The first law relates heat supplied, work done and the change in internal energy through energy conservation. Problems use sign conventions and apply the law to isothermal, adiabatic, isobaric and isochoric processes. Internal energy is a state function, while heat and work depend on the path followed.
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