Question: Which of the following statements is true regarding enthalpy changes?

Options:

1. Enthalpy changes are path-dependent.
2. Enthalpy is a state function.
3. Enthalpy cannot be measured directly.
4. All of the above.

Correct Answer: Enthalpy is a state function.

Solution:

Enthalpy is a state function, meaning its change depends only on the initial and final states, not the path taken.