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For an isothermal process ΔE = 0

1. (a) ΔE = 0
2. (b) ΔH = 0
3. (c) ΔG = 0
4. (d) All of the above

Correct answer: (a) ΔE = 0

Solution

In an isothermal process, the temperature remains constant, so the internal energy change (ΔE) is zero because internal energy is a function of temperature.

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