Hess's Law

Johnathan Smith 1D
Posts: 108
Joined: Wed Sep 11, 2019 12:16 am

Hess's Law

What does Hess's law describe?

Zoya Mulji 1K
Posts: 105
Joined: Thu Jul 11, 2019 12:15 am

Re: Hess's Law

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
Posts: 108
Joined: Sat Sep 28, 2019 12:15 am

Re: Hess's Law

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
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Joined: Fri Aug 30, 2019 12:17 am
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Re: Hess's Law

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

Vuong_2F
Posts: 90
Joined: Sat Sep 14, 2019 12:17 am

Re: Hess's Law

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
Posts: 112
Joined: Wed Sep 18, 2019 12:21 am

Re: Hess's Law

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
Posts: 101
Joined: Fri Aug 09, 2019 12:17 am

Re: Hess's Law

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
Posts: 100
Joined: Sat Aug 24, 2019 12:17 am

Re: Hess's Law

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

Hannah Pham
Posts: 104
Joined: Fri Aug 09, 2019 12:17 am

Re: Hess's Law

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
Posts: 104
Joined: Thu Jul 25, 2019 12:16 am

Re: Hess's Law

When do we use Hess's Law?

Return to “Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)”

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