Hw3 - General Chemistry Lecture Spring 2008 HW#3(10 points Last Name First Name General Instructions A hard copy of this assignment is due at the

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General Chemistry Lecture, Spring 2008, HW #3 (10 points) Last Name: First Name: General Instructions: • A hard copy of this assignment is due at the beginning of class on Monday February 18th. • No late assignments will be accepted. • You may get help from me and your classmates on this assignment, but the work you turn in must be written by you. • Your set-up is just as important as your final answer. Show your calculations clearly and with the appropriate units to be eligible for full credit. 1) Predict the algebraic sign of the entropy change of the following reaction and explain your answer: SO 2 (g) + CaO (s) CaSO 3 (s) I predict that the entropy change will be (-) and decrease in disorder/dispersion because there is a higher entropy on the reactants side than there is on the products side. The 1 mol of SO 2 gas (high entropy) combines with solid CaO to form a single mol of solid CaSO 3 which is more ordered than the 2 reactants. 2) Aluminum oxidizes rather easily but forms a thin protective coating of Al2O3 that
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This homework help was uploaded on 04/22/2008 for the course CHEM 152 taught by Professor Schafer during the Spring '08 term at San Diego.

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Hw3 - General Chemistry Lecture Spring 2008 HW#3(10 points Last Name First Name General Instructions A hard copy of this assignment is due at the

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