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Chloe Alviz 1E
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Postby Chloe Alviz 1E » Sun Feb 02, 2020 9:16 pm

When exactly does enthalpy equal "q"? Are there certain conditions we need to follow?

Andrew Pfeiffer 2E
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Re: Enthalpy

Postby Andrew Pfeiffer 2E » Sun Feb 02, 2020 9:19 pm

If there is no non-expansion work done on the system and the pressure is still constant, then the heat consumed or released by the system will be equal to q.

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Re: Enthalpy

Postby JohnWalkiewicz2J » Sun Feb 02, 2020 9:32 pm

In terms of enthalpy, ΔH = q only when pressure is constant.

Janet Nguy 2C
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Re: Enthalpy

Postby Janet Nguy 2C » Sun Feb 02, 2020 9:32 pm

q = enthalpy when the pressure is constant, such as in an open system.

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Re: Enthalpy

Postby ABombino_2J » Sun Feb 02, 2020 9:36 pm

q=enthalpy only when the pressure is constant because no other work is being done.

Areena H 2K
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Re: Enthalpy

Postby Areena H 2K » Sun Feb 02, 2020 10:49 pm

When q equals delta H that means that pressure is constant in the system. There is also no other work being done on the system.

Dina Marchenko 2J
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Joined: Thu Jul 25, 2019 12:16 am

Re: Enthalpy

Postby Dina Marchenko 2J » Mon Feb 03, 2020 12:52 pm

How does enthalpy or change in enthalpy relate to q when pressure isn't constant?

Maya Beal Dis 1D
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Re: Enthalpy

Postby Maya Beal Dis 1D » Tue Feb 04, 2020 10:41 am

Do we need to memorize the table in the textbook that tells you which fraction to multiply R by based on if the reactant is an atom or molecule and so forth?

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