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Sidharth D 1E wrote:Both of these are used to find enthalpy/delta H but also find change in internal energy which is q + w. Therefore, q can either be qp or qv depending on the given conditions.
Enthalpy/delta H is equal to qp, the amount of heat released or absorbed at a constant pressure. Using qv implies that the change in the internal energy (U) equals qv. The work term w drops out of U = q + w under conditions of constant volume.
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