Under what conditions is the change in internal energy, ? E rxn , equal to the h

Question

Under what conditions is the change in internal energy, ?E rxn , equal to the heat evolved in a reaction? Under what conditions is the change in internal energy, ?E rxn , equal to the heat evolved in a reaction? Constant volume Constant pressure Constant temperature ?E rxn is never equal to the heat evolved in a reaction. Under what conditions is the change in internal energy, ?E rxn , equal to the heat evolved in a reaction? Constant volume Constant pressure Constant temperature ?E rxn is never equal to the heat evolved in a reaction.

Explanation / Answer

option 1 Constant volume

DE = Q + W

given DE = Q

therefore W=0 only when volume is constant

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