Question

under what condition entahlpy change is equal to the internal enargy change?

Answer 1

At constant volume, the heat of reaction is equal to the change in the internal energy of the system. At constant pressure, the heat of reaction is equal to the enthalpy change of the system.

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Answer 2

Answer:

∆H = ∆E + ∆ngRT

∆ng = 0

∆H = ∆E

example :-

N2 + O2 - 2NO

∆ng = sum of coefficient of Gaseous Products- Sum of Coefficient Of Gaseous Reactants

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