removing heat from system

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davidryan3f
Posts: 63
Joined: Fri Sep 28, 2018 12:23 am

removing heat from system

Postby davidryan3f » Fri Mar 15, 2019 7:50 pm

If a reaction is exothermic, will the temperature always decrease? In not, what are the exceptions to this rule?

keyaluo4C
Posts: 54
Joined: Fri Sep 28, 2018 12:17 am

Re: removing heat from system

Postby keyaluo4C » Fri Mar 15, 2019 7:58 pm

The definition of an exothermic reaction is one that releases heat.

Ashley Fang 2G
Posts: 81
Joined: Fri Aug 30, 2019 12:17 am

Re: removing heat from system

Postby Ashley Fang 2G » Tue Jan 21, 2020 11:35 am

Yes, if a reaction is exothermic, it will always release energy and delta H will always be less than 0.

Juliana Chopelas 1A
Posts: 30
Joined: Sat Aug 24, 2019 12:16 am

Re: removing heat from system

Postby Juliana Chopelas 1A » Thu Jan 23, 2020 12:40 pm

Exothermic reaction will always have a decrease in temperature as energy is being released. Once the temperature rises it will switch to endothermic as energy is being absorbed.

Cooper Baddley 1F
Posts: 80
Joined: Wed Sep 18, 2019 12:19 am

Re: removing heat from system

Postby Cooper Baddley 1F » Thu Jan 23, 2020 12:53 pm

Exothermic means it releases heat so yes it will mean the temperature of the system decreases

Diana Andrade_4F
Posts: 30
Joined: Tue Nov 05, 2019 12:18 am

Re: removing heat from system

Postby Diana Andrade_4F » Thu Jan 23, 2020 5:16 pm

Yeah, if a reaction is exothermic then temp will decrease. This is because the reaction is releasing heat (delta H is negative).

Jaklin Astvatsatryan
Posts: 70
Joined: Wed Sep 18, 2019 12:18 am

Re: removing heat from system

Postby Jaklin Astvatsatryan » Thu Jan 23, 2020 6:22 pm

If Kc decreases with an increase in temperature, the reaction shifts to the left, making it an exothermic reaction. The Kc can also increase with a decrease in temperature, causing the reaction to shift to the right.


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