## H and Q

Kimberly 1H
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### H and Q

What's the difference between $\Delta$H and Q?

Jessica Tsui 1H
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

### Re: H and Q

$\Delta$H, enthalpy, is the measure of potential energy change of a chemical reaction in kJ/mol, while q measures heat in joules. $\Delta$H and q are related, in that -$\Delta$H = +q.

Please correct me if I am wrong.

Ana Pedreros
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Joined: Fri Sep 28, 2018 12:19 am

### Re: H and Q

Enthalpy is the amount of heat, $\Delta$ H, released or absorbed at a constant pressure, q.

Noah Fox 1E
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Joined: Fri Sep 28, 2018 12:20 am

### Re: H and Q

In Enthalpy delta H is a state function of the holistic change in energy configuration, where as q is the heat flow either into or out of the reaction as a result of the change in delta H
Sources:
https://chem.libretexts.org/Bookshelves ... _Chemistry)/Thermodynamics/Energies_and_Potentials/Enthalpy

Albert Duong 4C
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### Re: H and Q

Delta H is the amount of heat absorbed/released at a constant pressure. Therefore, Qp, being quantity of heat at a constant pressure, should be essentially equal to delta H.

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