Enthalpy of a system is given as _?
Correct answer: B. ∆H = E + PV
- A. ∆H = qv + w
- B. ∆H = E + PV
- C. ∆H = qp + PV
- D. ∆H = E
Explanation
In symbols, the enthalpy, H, equals the sum of the internal energy, E, and the product of the pressure, P, and volume, V, of the system: H = E + PV.
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About Enthalpy
Enthalpy is the heat content of a system measured at constant pressure, and its change indicates whether a reaction or physical process is endothermic or exothermic. The topic covers state functions, enthalpy diagrams, standard enthalpy of formation, combustion and neutralisation, and the relationship between ΔH and internal energy change.
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