In this lecture you will learn about Enthalpy, Entropy, and the Second Law of Thermodynamics. You will start by covering Factors Affecting Equilibrium Constants which delve into Spontaneous Reaction and Temperature Effects. Next, you will look at the State Functions of Enthalpy and Entropy with a unique perspective given by Hess's Law. The Statistical Interpretation of Entropy is next on the Agenda with the Boltzmann Entropy Equation, Reversible Changes, and the Third Law of Thermodynamics following. Next you will look at the Entropies of Gases, Liquids, and Solids, as well as how to find the Entropy Values from Enthalpy or Temperature Data. Next you will look for Entropy Changes in Phase Changes before doubling back onto the Second Law of Thermodynamics which reveals Spontaneous and Reversible processes. Lastly, you will look at Reactant Favored Equilibria and Product Favored Equilibria before learning the Limitations of Applying the Second Law of Thermodynamics to Equilibria.
a hypothetical idea; only applies to tiny changes
and calculations of entropy: DS = qrev/T
of gases>entropies of liquids> entropies of solids
law of thermodynamics: S of perfect crystals at 0K = 0
entropy changes for phase changes
definition of Second law of thermodynamics
law alone may be hard to apply in predicting equilibrium state of
Enthalpy, Entropy, Second Law of Thermodynamics
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
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