Question:
Enthalpy relates to __________.
Enthalpy relates to __________.
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This law states enthalpy change is independent of the reaction pathway.
Updated On: Jul 4, 2026
- Gay-Lussac's law
- Boyle's law
- Hess's law
- Raoult's law
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The Correct Option is C
Solution and Explanation
Step 1: Enthalpy is the heat content of a system at constant pressure, and it is central to thermochemistry, the study of heat changes during chemical reactions.
Step 2: Hess's law, the law of constant heat summation, states that the total enthalpy change of a reaction is the same whether it happens in one step or several steps, since enthalpy is a state function.
Step 3: Gay-Lussac's law relates pressure and temperature of a gas at constant volume, Boyle's law relates pressure and volume at constant temperature, and Raoult's law relates vapor pressure of a solution to mole fraction, none of which are about heat content changes.
Step 4: So the correct answer is Hess's law.
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