Hess's Law

[Johnathan Smith 1D]

What does Hess's law describe?

[Zoya Mulji 1K]

Hess's Law shows you that enthalpy changes are additive because enthalpy change at each stage can be added to give total enthalpy change.

[saigorijavolu2k]

Hess's law basically states that even though there may be intermediary steps in a reaction. The total enthalpy change is the sum of all changes because enthalpy is a state function

[Nikki Razal 1L]

Hess's Law states that enthalpy changes are additive because enthalpy changes are a state function, which must be additive.

[Vuong_2F]

Hess's Law states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes (demonstrating that enthalpy is a state function).

[AGaeta_2C]

Hess's Law describes that because enthalpy is a state function, it must be additive (enthalpy change at each step of a multistep reaction can be added to give TOTAL enthalpy change).

[Nare Nazaryan 1F]

Hess' law states that the change of enthalpy in a chemical reaction is independent of the pathway between the initial and final states (enthalpy is a state function and you can add enthalpies to get the total enthalpy).

[Joowon Seo 3A]

Hess's law states that enthalpies can be additive. You can add the total reaction enthalpies.

[Hannah Pham]

Hess's Law states that regardless of the intermediate steps taken in a reaction, the total enthalpy change for the reaction is the sum of each individual changes.

[Alison Trinh 1E]

When do we use Hess's Law?