CHEM 122 1st Edition Lecture 31 Outline of Last LectureI. Factors that affect solubilityII. Precipitations of IonsOutline of Current Lecture I. ThermodynamicsII. SpontaneityIII. EntropyCurrent LectureThermodynamics: energy changes and the flow of energy.- 2factors that act as the driving force for chemical reactions.o Enthalpy Negative change in Enthalpy tend to have large equilibrium constantso Increase in disorder or randomness of the system.Spontaneity- Spontaneous process: Processes that occur without any outside intervention.o Processes that result in a reduction of their potential energy tend to be spontaneous processes.o Exothermic processes have a tendency to be spontaneous process.- Nonspontaneous Process: Processes that require an outside intervention to occur.Entropy (S): thermodynamic quantity that is measure of the randomness or disorder of a system.- State Functions: depend on the initial and final conditions.- Change in Entropy= Sfinal-Sinital- For gases an increase in volume results in an increase in entropy- AN increase in temperature results in an increase in entropy- Solids are highly ordered; liquids have less order; gases have very little orderThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best Used as a supplement to your own notes, not as a substitute.o Sgas >> Sliquid >
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