dissociation energy

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Elyssa Smith 4B
Posts: 58
Joined: Wed Sep 18, 2019 12:22 am

dissociation energy

Postby Elyssa Smith 4B » Fri Nov 01, 2019 4:44 pm

Why is disassociation energy always positive?

Nathan Nakaguchi 1G
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Joined: Wed Sep 18, 2019 12:22 am
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Re: dissociation energy

Postby Nathan Nakaguchi 1G » Fri Nov 01, 2019 5:00 pm

I'm not 100% on this but I believe Dissociation energy is always positive because breaking a bond will always require an input of energy, if it were to release energy dissociation energy would be negative but that can't happen because breaking a bond is going from a lower potential energy to a higher potential energy.

jisulee1C
Posts: 149
Joined: Thu Jul 25, 2019 12:17 am

Re: dissociation energy

Postby jisulee1C » Fri Nov 01, 2019 5:13 pm

Dissociation energy is always positive because then dissociation energy is the energy required to break a bond and breaking a bond will always require an input of energy while forming bonds release energy.

Frederick Keith_4C
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Re: dissociation energy

Postby Frederick Keith_4C » Sun Nov 03, 2019 2:08 pm

Dissociation energy is defined as the energy needed to break every chemical bond in a molecule and completely separate all of its atoms. This bond-breaking process is endothermic as it requires an input of energy to do so, and will always result in a positive number.

Ashley Kim 3F
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Joined: Thu Jul 25, 2019 12:17 am

Re: dissociation energy

Postby Ashley Kim 3F » Sun Nov 03, 2019 2:10 pm

Dissociation energy is always positive because you are inputting energy into the system, not taking it out.

Bradley Whitworth 4B
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Re: dissociation energy

Postby Bradley Whitworth 4B » Sun Nov 03, 2019 3:26 pm

Breaking a bond always requires some energy so dissociation energy is always positive.

pauline young 1L
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Joined: Thu Jul 11, 2019 12:15 am

Re: dissociation energy

Postby pauline young 1L » Sun Nov 03, 2019 3:28 pm

since you are trying to break bonds, energy is always required (its always going in) and therefore it is always going to be positive.

kristi le 2F
Posts: 102
Joined: Thu Jul 11, 2019 12:15 am

Re: dissociation energy

Postby kristi le 2F » Sun Nov 03, 2019 8:48 pm

Breaking a bond requires energy since bound atoms have lower energy than free atoms. Therefore, forming a bond releases energy.


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