Page 1 of 1

Hess's Law

Posted: Sun Feb 03, 2019 8:25 pm
by 305174946
Will we ever have to do Hess's law problems in which we consider the changes in temperature?

Re: Hess's Law

Posted: Sun Feb 03, 2019 8:27 pm
by 405021651
I don't believe I've done any homework problems involving this but I am not sure yet:/

Re: Hess's Law

Posted: Sun Feb 03, 2019 9:02 pm
by Faith Fredlund 1H
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.

Re: Hess's Law

Posted: Sun Feb 03, 2019 10:33 pm
by Matthew Choi 2H
I doubt it because the numbers that we use in the formula usually are at the same temperature.