Chemistry MCQS - QUESTION DETAILS
The enthalpy change in a chemical reaction at constant pressure (ΔH) is related to the internal energy change (ΔU) and pressure change (ΔP) by:
A. ΔH = ΔU + ΔP
B. ΔH = ΔU + PΔV
C. ΔH = ΔU - PΔV
D. ΔH = ΔU/ΔP

The relationship is ΔH = ΔU + PΔV, where ΔH is enthalpy change, ΔU is internal energy change, P is pressure, and ΔV is volume change.

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