Hess's Law Details

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YashDeshmukh1D
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Joined: Fri Sep 29, 2017 7:05 am

Hess's Law Details

Postby YashDeshmukh1D » Tue Jan 23, 2018 6:13 pm

When using Hess's law to find the enthalpy of formation for a compound, is it necessary for all the other reactants and products to have the same coefficients as the original equation? Also, can the final equations have fractions as coefficients?
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Guadalupe T 1E
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Joined: Fri Sep 29, 2017 7:04 am

Re: Hess's Law Details

Postby Guadalupe T 1E » Tue Jan 23, 2018 6:35 pm

Yes to both questions. You will need to manipulate the other reactants/products in order to get to the original equation.
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mhuang 1E
Posts: 22
Joined: Fri Sep 29, 2017 7:05 am

Re: Hess's Law Details

Postby mhuang 1E » Tue Jan 23, 2018 6:37 pm

Also, though final equations can have fractions has coefficients, we typically use whole numbers instead, just so that it's easier to calculate and work with.
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