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Endothermic vs. Exothermic

Posted: Tue Jan 22, 2019 12:38 pm
by Emma Scholes 1L
What is the difference between an endothermic reaction and an exothermic reaction?

Re: Endothermic vs. Exothermic

Posted: Tue Jan 22, 2019 1:02 pm
by 505095972
An endothermic reaction requires energy, while an exothermic reaction releases energy.

Re: Endothermic vs. Exothermic

Posted: Tue Jan 22, 2019 1:17 pm
by Cody Do 2F
When temperature increases, if the reaction is endothermic, then the products are favored. Conversely, if the temperature is decreased for an endothermic reaction, then the reactants are favored.

When temperature increases for an exothermic reaction, then the reactants are favored. Conversely, if the temperature is decreased for an exothermic reaction, then the products are favored.

Re: Endothermic vs. Exothermic

Posted: Tue Jan 22, 2019 2:13 pm
by Lauren Ho 2E
here is a visual representation:

Re: Endothermic vs. Exothermic

Posted: Wed Jan 23, 2019 9:20 am
by vaishali 1D
If the reaction is endothermic, then the products are favored when temperature increases.

If the reaction is exothermic, then the reactants are favored when temperature increases.

The opposite is true for each of the above statements when temperature decreases.

Re: Endothermic vs. Exothermic

Posted: Wed Jan 23, 2019 12:35 pm
by lindsey_ammann_4E
When a reaction is endothermic, think of heat as a reactant.
When a reaction is exothermic, think of heat as a product.

Re: Endothermic vs. Exothermic

Posted: Wed Jan 23, 2019 2:08 pm
by Sophia Ding 1B
For exothermic, you can think of heat being released, so it would be reactants --> products + heat. Vice versa, for an endothermic reaction heat is required for the reaction to proceed, so it would look like reactants + heat --> products. So if temperature was increased, equilibrium would shift opposite of where heat is, the direction depending on if the reaction is endothermic or exothermic.

Re: Endothermic vs. Exothermic

Posted: Wed Jan 23, 2019 4:23 pm
by Sarah Fatkin 4I
Hi! Another thing to think about is that exothermic reactions heat up their surrounding areas, while endothermic reactions cool down surrounding areas.

Re: Endothermic vs. Exothermic

Posted: Wed Jan 23, 2019 4:38 pm
by Heesu_Kim_1F
Exothermic reaction gives a net release of heat and thus would result in delta H to be a negative value.
Endothermic reaction requires heat and thus would result in delta H to be a positive value.