Endo vs. Exothermic

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Chloe Alviz 1E
Posts: 102
Joined: Sat Aug 17, 2019 12:17 am

Endo vs. Exothermic

Postby Chloe Alviz 1E » Sun Jan 19, 2020 5:51 pm

How can we tell if a reaction is endothermic or exothermic besides looking at the sign of ΔH?

Vincent Leong 2B
Posts: 207
Joined: Fri Aug 09, 2019 12:15 am

Re: Endo vs. Exothermic

Postby Vincent Leong 2B » Sun Jan 19, 2020 5:54 pm

bond forming = exothermic = n2 + h2 --> nh3

bond breaking = endothermic = PCl5 --> PCl3 + Cl2

kevinolvera1j
Posts: 103
Joined: Fri Aug 02, 2019 12:15 am

Re: Endo vs. Exothermic

Postby kevinolvera1j » Sun Jan 19, 2020 6:10 pm

If a reaction is exothermic, it releases energy. If a reaction is endothermic, it absorbs energy.

rabiasumar2E
Posts: 108
Joined: Thu Jul 11, 2019 12:15 am

Re: Endo vs. Exothermic

Postby rabiasumar2E » Sun Jan 19, 2020 6:24 pm

If a reaction requires heat it is endothermic. If a reaction gives off heat it is exothermic.

Veronica Lu 2H
Posts: 89
Joined: Wed Sep 18, 2019 12:18 am
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Re: Endo vs. Exothermic

Postby Veronica Lu 2H » Sun Jan 19, 2020 6:24 pm

Typically a reaction that forms bonds is exothermic whereas a bond breaking reaction is usually endothermic

J Medina 2I
Posts: 102
Joined: Wed Sep 25, 2019 12:17 am

Re: Endo vs. Exothermic

Postby J Medina 2I » Sun Jan 19, 2020 6:28 pm

If you're looking at a graph, an endothermic reaction will be drawn so that the ending of the graph is higher than the beginning. This means that the products of the reaction will have greater energy than the reactants. And for an exothermic reaction graph, the ending of the graph will be lower than the beginning, meaning the energy of the reactants is greater than that of the products.


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