endo vs exo

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Mallika Singh 1G
Posts: 99
Joined: Sat Aug 24, 2019 12:16 am

endo vs exo

Postby Mallika Singh 1G » Mon Feb 03, 2020 2:26 pm

For the breaking of a diatomic molecule's bond, what would the sign for delta H be? Why?

Bilal Pandit 1J
Posts: 98
Joined: Wed Sep 11, 2019 12:16 am

Re: endo vs exo

Postby Bilal Pandit 1J » Mon Feb 03, 2020 2:27 pm

Breaking a bond requires energy, so it would be endothermic while forming bonds releases energy (exothermic)

Daniel Toscano 1L
Posts: 95
Joined: Tue Nov 13, 2018 12:18 am

Re: endo vs exo

Postby Daniel Toscano 1L » Mon Feb 03, 2020 3:16 pm

for breaking a bond, the sign of delta H would be positive as energy is required (endothermic). This is because of the fact that bonds don't break spontaneously, so in order to break it energy is required

005162902
Posts: 102
Joined: Wed Sep 18, 2019 12:15 am

Re: endo vs exo

Postby 005162902 » Mon Feb 03, 2020 4:36 pm

Heat and energy are required to break bonds. Therefore, breaking bonds is an endothermic reaction and delta H would be positive (+) because heat is being added to the system to break the bonds.

Hannah Romeo 1J
Posts: 58
Joined: Thu Jul 11, 2019 12:16 am

Re: endo vs exo

Postby Hannah Romeo 1J » Mon Feb 03, 2020 5:01 pm

Forming a chemical bond always requires energy, therefore the process is endothermic and delta H is positive. In contrast, the breaking of a chemical bond is the opposite and is exothermic so delta H is negative.

BCaballero_4F
Posts: 94
Joined: Wed Nov 14, 2018 12:22 am

Re: endo vs exo

Postby BCaballero_4F » Mon Feb 03, 2020 9:17 pm

Delta H would be positive since breaking a bond would be considered an endothermic reaction

Jainam Shah 4I
Posts: 130
Joined: Fri Aug 30, 2019 12:16 am

Re: endo vs exo

Postby Jainam Shah 4I » Mon Feb 03, 2020 9:40 pm

To break bond you always need an input of energy so it would be endothermic

AlyshaP_2B
Posts: 112
Joined: Wed Sep 18, 2019 12:19 am

Re: endo vs exo

Postby AlyshaP_2B » Mon Feb 03, 2020 11:06 pm

Forming a bond releases energy and therefore is exothermic, while breaking a bond requires an input of energy and therefore is endothermic.

105335337
Posts: 103
Joined: Sat Aug 24, 2019 12:15 am

Re: endo vs exo

Postby 105335337 » Mon Feb 03, 2020 11:27 pm

Breaking a bond requires energy to overcome the bond strength while forming a bond requires energy to be released.


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