"If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them". This is ______________ law?
Correct answer: B. Hess's
- A. Kirchoff's
- B. Hess's
- C. Lavoisier and Laplace
- D. None of these
Explanation
Hess's law states that the enthalpy change of a reaction depends only on the initial and final states, not on the path or number of intermediate steps. Kirchhoff's law instead describes how reaction enthalpy varies with temperature.
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