Exothermic and endothermic reactions

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Tyler Angtuaco 1G
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Joined: Wed Sep 11, 2019 12:16 am

Exothermic and endothermic reactions

Postby Tyler Angtuaco 1G » Sat Jan 11, 2020 2:22 pm

How will the reaction change if it is exothermic and heat is added (considering the fact that exothermic reactions release heat)? Conversely, how would it change if the reaction was endothermic and cooled (considering that endothermic reactions absorb heat)?

Sahil Jog 1F
Posts: 126
Joined: Thu Jul 11, 2019 12:16 am

Re: Exothermic and endothermic reactions

Postby Sahil Jog 1F » Sat Jan 11, 2020 2:31 pm

If the reaction is exothermic, then adding heat to the reaction would make the reverse reaction more favorable, and thus more reactants would form. Vice versa for removing heat. If the reaction is endothermic, then adding heat would make the forward reaction more favorable. Vice versa for removing heat.

Nuoya Jiang
Posts: 99
Joined: Sat Sep 14, 2019 12:17 am

Re: Exothermic and endothermic reactions

Postby Nuoya Jiang » Sat Jan 11, 2020 2:39 pm

We can see the exothermic reaction as a reaction with "heat" as a product. Thus if we increase temperature of the system, we are indeed increasing the "concentration" of heat (product), so the reaction goes to the left. It works the same as in an endothermic reaction. We simply see heat as a reactant needed.

Amanda Mei 1B
Posts: 109
Joined: Sat Aug 24, 2019 12:16 am

Re: Exothermic and endothermic reactions

Postby Amanda Mei 1B » Sat Jan 11, 2020 2:50 pm

You can think of heat like a reactant or product, depending on whether the reaction is endothermic or exothermic, and apply the same rules by Le Chatelier's Principle as you would do with other reactants and products to figure out which way the reaction will shift.

Celine 1F
Posts: 120
Joined: Fri Aug 02, 2019 12:16 am

Re: Exothermic and endothermic reactions

Postby Celine 1F » Sat Jan 11, 2020 5:11 pm

If the reaction is exothermic and heat is added, then the reverse reaction would be favorable, causing more reactants to form. Heat can be seen as a product here, so if heat is added, more reactants will form.


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