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### Enthalpy w/ Temp

Posted: Sun Jan 26, 2020 3:21 pm
How does a change in temperature affect enthalpy?

### Re: Enthalpy w/ Temp

Posted: Sun Jan 26, 2020 3:43 pm
An increase in temperature leads to a change in enthalpy. Increasing temperature increases enthalpy, and vice versa.

### Re: Enthalpy w/ Temp

Posted: 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.

### Re: Enthalpy w/ Temp

Posted: Sun Jan 26, 2020 4:08 pm
How do we tell with enthalpy that a reaction is exothermic or endothermic?

### Re: Enthalpy w/ Temp

Posted: 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

### Re: Enthalpy w/ Temp

Posted: 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.

### Re: Enthalpy w/ Temp

Posted: 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)