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The energy change in the reverse reaction will always be the opposite of the forward reaction since the heat curve is flipped. So the reverse reaction for something endothermic such as vaporization would be exothermic
Yes, it is important to note that the reverse of those reactions are condensation, freezing, and deposition, respectively. Condensation, freezing, and deposition are bond forming, which is why they would be exothermic. Bond breaking, on the other hand, would include vaporization, melting, and sublimation. These would be endothermic.
Natalie Benitez 1E wrote:Why would the reverse reaction of vaporization, melting and sublimation be exothermic?
Well first, the reason why vaporization, melting, and sublimation are endothermic is because bonds are being broken, which takes energy to happen. So in the reverse reaction, bonds are being formed, and it is exothermic because forming bonds releases energy.
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