Dissociation Energy
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Dissociation Energy
Why are dissociation energies always positive? Is energy released or gained when a bond is broken?
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Re: Dissociation Energy
Dissociation energies are always positive because energy is absorbed in order to break the bond.
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Re: Dissociation Energy
If breaking a bond requires energy then is energy gained to break the bond and the energy is released when the bond is broken???
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Re: Dissociation Energy
I think it helps to think of energy as power to do something, rather than something tangible. It takes energy to break a bond, but energy is released when a bond is formed. That's because a bonded state is typically less energetic or "powerful" than an unbonded one, and therefore more stable. Matter is always looking for that stability. So, to break a bond means going against that natural attempt to gain stability, therefore requiring energy from outside.
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Re: Dissociation Energy
^ Dissociation energy is positive because energy is need to break the bond. On the other hand, when bonds are formed, energy is release and that value of energy is negative.
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Re: Dissociation Energy
Dissociation energy is always positive because energy is always absorbed for dissociation. To break a bond requires an additional absorption of energy
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Re: Dissociation Energy
dissociation energy is the energy required to break a bond, and since breaking bonds requires energy, the dissociation energy will be positive
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