Enthalpy w/ Temp

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805383532
Posts: 53
Joined: Thu Jul 11, 2019 12:16 am

Enthalpy w/ Temp

Postby 805383532 » Sun Jan 26, 2020 3:21 pm

How does a change in temperature affect enthalpy?

SnehinRajkumar1L
Posts: 101
Joined: Thu Jul 11, 2019 12:15 am

Re: Enthalpy w/ Temp

Postby SnehinRajkumar1L » Sun Jan 26, 2020 3:43 pm

An increase in temperature leads to a change in enthalpy. Increasing temperature increases enthalpy, and vice versa.

Deepika Reddy 1A
Posts: 125
Joined: Thu Jul 11, 2019 12:15 am

Re: Enthalpy w/ Temp

Postby Deepika Reddy 1A » Sun Jan 26, 2020 3:44 pm

If a reaction loses heat so that the products have less heat than the reactants, then the enthalpy is negative. If a reaction gains heat in order to occur, then the enthalpy is positive.

Natalie Benitez 1E
Posts: 100
Joined: Fri Aug 02, 2019 12:15 am

Re: Enthalpy w/ Temp

Postby Natalie Benitez 1E » Sun Jan 26, 2020 4:08 pm

How do we tell with enthalpy that a reaction is exothermic or endothermic?

Shrayes Raman
Posts: 129
Joined: Sat Jul 20, 2019 12:15 am

Re: Enthalpy w/ Temp

Postby Shrayes Raman » Mon Jan 27, 2020 12:10 am

Enthalpy is listed as h as with other examples if it is negative it is exothermic and vice versa

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: Enthalpy w/ Temp

Postby Justin Quan 4I » Mon Jan 27, 2020 8:38 am

Natalie Benitez 1E wrote:How do we tell with enthalpy that a reaction is exothermic or endothermic?

If enthalpy is negative, then heat is lost or released from the system and the reaction is exothermic. If enthalpy is positive, then heat is absorbed or gained into the system and the reaction is endothermic.

Ashley Fang 2G
Posts: 102
Joined: Fri Aug 30, 2019 12:17 am

Re: Enthalpy w/ Temp

Postby Ashley Fang 2G » Mon Jan 27, 2020 10:44 am

It makes sense that as temperature increases, so does enthalpy if we refer back to the equation:
delta G = delta H - T(delta S)


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