Thermochemistry and Heat of Vaporization
Explore the concepts of endothermic and exothermic reactions, enthalpies of fusion and vaporization, and the Clausius-Clapeyron equation. Learn about molar heat of vaporization and fusion to understand the energy changes in physical and chemical processes.
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Presentation Transcript
General Chemistry General Chemistry CHEM 101 (3+1+0)
Chapter 6 - 6 Thermochemistry
Some types of Endothermic and exothermic physical changes and chemical reactions (Enthalpy of fusion, vaporization) 3
Molar heat of vaporization (Hvap) is the energy required to vaporize 1 mole of a liquid at its boiling point. Clausius-Clapeyron Equation Hvap RT P = (equilibrium) vapor pressure ln P = - + C T = temperature (K) R = gas constant (8.314 J/K mol) Vapor Pressure Versus Temperature 4
Molar heat of fusion (Hfus) is the energy required to melt 1 mole of a solid substance at its freezing point. 5
