42 S2008 Review for Final Part 1

# 42 S2008 Review for Final Part 1 - Room Assignments for the...

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1 1 Harriman Hall 137 106353674 – 999999999 Old Chemistry 116 106290551 – 106353673 106237482 – 106290550 Sports Complex Arena 000000000 – 106237481 Room Solar ID Room Assignments for the Final Exam Wednesday, May 14th, 11 AM – 1:30 PM 2 Be sure to bring the following: • Stony Brook ID card • 2 or more #2 pencils and a good eraser • Calculator with extra batteries Do NOT bring any of the following: • Cell phones, beepers, iPods, or other communication devices • Textbook or notes Cover page with information and equations are posted on BB • In the Information Section • Additional info is provided with some questions • Be sure to bubble in your ID number correctly! Final Exam, Wednesday, May 14 th , 11 AM – 1:30 PM

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2 3 Review of CHE 132 Part 1 Chapters 6, 13, 14, 16, 15(solubility), 18 I’ll summarize key concepts from each chapter. We’ll work 1 problem from each chapter. You should work additional textbook problems by thinking about and applying the concepts that are relevant. 4 Chapter 6 Energy and Chemical Reactions Conservation of Energy, E E system = q + w + q = energy transferred into the system + w = work that is done on the system Enthalpy, H H system = q P = E system – w expansion w expansion = - P V = - P (V final – V initial ) Hess’s Law If Reaction 3 = Reaction 1 + Reaction 2 Then H o 3 = H o 1 + H o 2 Works for any state function, not just enthalpy A state function only depends on the state or situation and not on the path for getting there.
3 5 Calorimetry The energy transferred into or out of a system (q, heat) can be determined from the resulting temperature change. q = c m T c = specific heat, m = mass, T = temperature c has units of J g -1 o C -1 Note T in K and o C are the same. heat capacity has units of J o C -1 molar heat capacity has units of J mol -1 o C -1 6 Chapter 6 Problem Calculate the change in temperature of the water when 15 g of MgSO 4 dissolves in 40 mL of water. MgSO 4 = 120.38 g mol -1 . C water = 75.3 J mol -1 K -1 MgSO 4 (s) Mg 2+ (aq) + SO 4 2- (aq) H = - 91.2 kJ mol -1 1. Restate the problem in abbreviated form: draw a diagram or a table to represent the problem. 2. Analyze the situation:

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42 S2008 Review for Final Part 1 - Room Assignments for the...

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