Hess's Law

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Jina Kwon
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

Hess's Law

Postby Jina Kwon » Sun Feb 09, 2020 12:03 pm

What property of enthalpy allows Hess's law to be used?

Sarah Blake-2I
Posts: 153
Joined: Fri Aug 30, 2019 12:16 am

Re: Hess's Law

Postby Sarah Blake-2I » Sun Feb 09, 2020 12:12 pm

We can use Hess's law because enthalpy is a state function, which means we can sum the enthalpy values to find the total enthalpy of the new chemical equation.

claudia_1h
Posts: 111
Joined: Fri Aug 09, 2019 12:16 am

Re: Hess's Law

Postby claudia_1h » Sun Feb 09, 2020 12:12 pm

Enthalpy is a state function (state values can be added/subtracted without worrying how they got there).

Emily Lo 1J
Posts: 50
Joined: Thu Sep 19, 2019 12:16 am

Re: Hess's Law

Postby Emily Lo 1J » Sun Feb 09, 2020 3:26 pm

We're able to use Hess' Law because enthalpy is a state function. Since it's a state function, we're able to just add the enthalpies together.

HuyHa_2H
Posts: 100
Joined: Wed Sep 11, 2019 12:15 am

Re: Hess's Law

Postby HuyHa_2H » Sun Feb 09, 2020 5:16 pm

Enthalpy is a state function therefore the total enthalpy can be summed up which allows Hess's law to be used.

Vivianvelazquez_1J
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Re: Hess's Law

Postby Vivianvelazquez_1J » Sun Feb 09, 2020 5:35 pm

Hess's law is able to be used because enthalpy is a state function. Since enthalpy is a state function, we're able to add the enthalpies together.

Celine 1F
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Joined: Fri Aug 02, 2019 12:16 am

Re: Hess's Law

Postby Celine 1F » Sun Feb 09, 2020 6:34 pm

Enthalpy is a state function which means their enthalpy values could be added/subtracted together

Nikki Razal 1L
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Re: Hess's Law

Postby Nikki Razal 1L » Sun Feb 09, 2020 6:37 pm

Enthalpy is a state function, so enthalpy is additive

Veronica Lu 2H
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Re: Hess's Law

Postby Veronica Lu 2H » Sun Feb 09, 2020 9:46 pm

Since enthalpy is a state function, their values can be added/subtracted together

EvanWang
Posts: 101
Joined: Sat Sep 07, 2019 12:16 am

Re: Hess's Law

Postby EvanWang » Sun Feb 09, 2020 9:50 pm

We can use Hess's law because enthalpy is a state property, so it doesn't matter the path you take to get from an initial condition to a final condition, the change in enthalpy will always be the same.

AronCainBayot2K
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

Re: Hess's Law

Postby AronCainBayot2K » Sun Feb 09, 2020 9:59 pm

Since it is a state function, enthalpy values can be added together or subtracted.


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