Thermochemical equation

isochoric/isometric:
isothermal:
isobaric:

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Cristian Carrasco 1F
Posts: 52
Joined: Fri Sep 29, 2017 7:06 am

Thermochemical equation

Postby Cristian Carrasco 1F » Sun Jan 14, 2018 10:33 pm

Can someone explain what a thermochemical equation is ?

sofiakavanaugh
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am
Been upvoted: 1 time

Re: Thermochemical equation

Postby sofiakavanaugh » Sun Jan 14, 2018 10:35 pm

I think a thermochemical equation is just a chemical equation that includes the change in enthalpy for the reaction (delta H)

604807557
Posts: 51
Joined: Wed Nov 16, 2016 3:02 am

Re: Thermochemical equation

Postby 604807557 » Sun Jan 14, 2018 11:52 pm

A thermochemical equation is a balanced chemical equation that has the physical states of all reactants and products along with the energy change. The reaction is endothermic if energy is a reactant and exothermic if energy is a product.

Peter Dis1G
Posts: 97
Joined: Fri Sep 29, 2017 7:04 am

Re: Thermochemical equation

Postby Peter Dis1G » Mon Jan 15, 2018 5:32 pm

A Thermochemical Equation is a balanced stoichiometric chemical equation that includes the enthalpy change, ΔH. In variable form, a thermochemical equation would look like this: A + B → C. ΔH = (±) #

Helen Shi 1J
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Joined: Sat Jul 22, 2017 3:00 am

Re: Thermochemical equation

Postby Helen Shi 1J » Fri Jan 19, 2018 11:47 pm

Can someone explain why the thermochemical equation on pg 288 example 8.7 is that change in enthaply= q x (2 mol)/n? Why would you divide the stoichiometric coefficient of original equation by the number of mols?

Sara Sasaki 1K
Posts: 48
Joined: Fri Sep 29, 2017 7:05 am

Re: Thermochemical equation

Postby Sara Sasaki 1K » Sat Jan 20, 2018 4:14 am

I believe it is because there are 2 moles of C6H6, and so in order to find the change in enthalpy you must multiply by 2. I think the book explains this a little more at the top of page 289 if that helps!


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