Bonds Broken - Bonds Formed?

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veneziaramirez 3I
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Joined: Fri Sep 29, 2017 7:07 am

Bonds Broken - Bonds Formed?

Postby veneziaramirez 3I » Wed Feb 07, 2018 9:24 pm

Are the bonds being added since bonds forming releases energy so it will be negative? Or is it broken- formed so it’s a double negative ?

Christy Lee 2H
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Re: Bonds Broken - Bonds Formed?

Postby Christy Lee 2H » Wed Feb 07, 2018 9:27 pm

It takes energy to break bonds (positive enthalpy) and releases energy to form bonds (negative enthalpy) and then you add those enthalpies together. You could also do broken-formed but make sure you use bond enthalpies directly.

Hellen Truong 2J
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Re: Bonds Broken - Bonds Formed?

Postby Hellen Truong 2J » Mon Feb 12, 2018 12:54 am

It helps to remember that atoms are more stable when they form bonds, so forming bonds releases energy (exothermic), while breaking them and returning them to a less stable state requires energy (endothermic).


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