Hess's Law

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305174946
Posts: 61
Joined: Fri Sep 28, 2018 12:17 am

Hess's Law

Postby 305174946 » Sun Feb 03, 2019 8:25 pm

Will we ever have to do Hess's law problems in which we consider the changes in temperature?

405021651
Posts: 46
Joined: Tue Nov 14, 2017 3:03 am

Re: Hess's Law

Postby 405021651 » Sun Feb 03, 2019 8:27 pm

I don't believe I've done any homework problems involving this but I am not sure yet:/

Faith Fredlund 1H
Posts: 68
Joined: Fri Sep 28, 2018 12:18 am

Re: Hess's Law

Postby Faith Fredlund 1H » Sun Feb 03, 2019 9:02 pm

Hess's Law: the overall reaction enthalpy is the sum of the reaction enthalpies of the steps into which the reaction can be divided (it is a state function).

For problems dealing with Hess's Law I would assume constant temperature considering you would will be using various chemical equations and their enthalpies to solve for one specific chemical reaction enthaply. I haven't come across a problem where they given multiple temperature yet.

Matthew Choi 2H
Posts: 59
Joined: Fri Sep 28, 2018 12:18 am

Re: Hess's Law

Postby Matthew Choi 2H » Sun Feb 03, 2019 10:33 pm

I doubt it because the numbers that we use in the formula usually are at the same temperature.


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