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Given the relation between enthalpy (H) ...

Given the relation between enthalpy (H) and internal energy (U).

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H = U + PV
Considering the initial and final states of H U and V as `H_(1) , U_(1) and V_(1) and H_(2) , U_(2) and V_(2) `
Change in enthalpy is
`(H_(2)-H_(1)) = (U_(2)-U_(1)) +P(V_(2)-V_(1)) `
`Deltah = DeltaU+PDeltaV`
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