Hess's Law

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Warda Sahib 2J
Posts: 29
Joined: Thu Jul 13, 2017 3:00 am

Hess's Law

Postby Warda Sahib 2J » Mon Jan 15, 2018 12:43 am

What does Hess's law allow you to do?

Sophie Krylova 2J
Posts: 59
Joined: Fri Sep 29, 2017 7:06 am

Re: Hess's Law

Postby Sophie Krylova 2J » Mon Jan 15, 2018 9:23 am

You can add and cancel out products and reactants; multiply, divide and reverse the equations.

snehabhargava
Posts: 52
Joined: Thu Jul 13, 2017 3:00 am

Re: Hess's Law

Postby snehabhargava » Mon Jan 15, 2018 5:13 pm

Hess's Law allows you to calculate enthalpy using products and reactants.

mayapartha_1D
Posts: 50
Joined: Fri Sep 29, 2017 7:07 am

Re: Hess's Law

Postby mayapartha_1D » Mon Jan 15, 2018 7:10 pm

Hi Warda!

Hess' Law is also especially helpful when you need to utilize the given reactions to come up with an unknown enthalpy. That way, you can use enthalpies that are known, rearrange the products and reactants, and solve for an unknown enthalpy.

Hope this helped!

Maya


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