Question 8.49

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Amy Zheng 2l
Posts: 57
Joined: Fri Sep 29, 2017 7:04 am

Question 8.49

Postby Amy Zheng 2l » Fri Jan 19, 2018 5:25 pm

In the question it states that the reaction produces heat but then delta H is negative. And I'm not sure if this is right, but I thought that heat would be negative since delta h is negative. BUT since the reaction produces heat that also leads me to think that heat would be positive. Basically I'm confused on whether the q(heat) is negative or positive.
Last edited by Amy Zheng 2l on Fri Jan 19, 2018 5:36 pm, edited 1 time in total.

Cali Rauk1D
Posts: 51
Joined: Fri Sep 29, 2017 7:03 am

Re: Question 8.49

Postby Cali Rauk1D » Fri Jan 19, 2018 5:27 pm

Yes, delta H would be negative because it is an exothermic reaction where the system gives off heat.

Rachel Formaker 1E
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Re: Question 8.49

Postby Rachel Formaker 1E » Fri Jan 19, 2018 8:22 pm

When a reaction produces heat (is exothermic), heat leaves the system. ΔH is negative because this represents heat leaving the system as it is produced.

Return to “Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)”

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