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I was wondering if delta H and q are ever interchangeable. Are there certain circumstances that allow for them to be? Can someone please explain? Sometimes in the solutions manual, delta H is used instead of q, like for example, in problems 8.37 and 8.45.
Yeah, the definition of enthalpy is the heat absorbed or released at a constant pressure. q with a subscript p means the heat absorbed or released at a constant pressure, so the two are interchangeable. If there is no subscript p after the q, however, then the two are not interchangeable.
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