Chem 1202 Fall 2024 Exam 3 Study Guide Exam 3 will be held during class on Wednesday Nov 6th from 1 30 2 20 PM The exam will have 18 multiple choice questions 2 bonus questions from the beginning of Chapter 14 and cover Chapter 5 on Thermochemistry and Chapter 19 on Chemical Thermodynamics The powerpoints for this chapter and these sections are on Moodle You should review the following concepts for the exam Relationship between potential energy charge and distance Work both relationship between P and V and relationship to q and E Relationship between enthalpy energy and P V Endothermic vs exothermic Spontaneity vs reversibility for S G and K vs Q Predict if S increases or decreases microstates Based on physical state and number of moles volume pressure and temperature You should review the following equations and calculations examples in the powerpoint and worked during class Kinetic energy q for constant pressure and constant volume calorimeters Adding reactions and adding H Hess law Dimensional analysis with H Using a table of H f to find H rxn Calorimeter problems S from q or H and T at phase equilibrium S rxn and G rxn as a summation of S or G f respectively G as it relates to H and S G and G as it relates to equilibrium constant and Q Estimate the boiling point of a substance using H G and S You will be given the following constants and equations for the exam R 8 314 0 08206 atm 101 3 J 1 L atm J mol K L mol Grxn o Hrxn o T Srxn o E q w S q T G G o RT ln Q Keq e o G RT q Cs m T q Ccal T
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