Practice Exam 2 Blank 2002

Practice Exam 2 Blank 2002 - Exam 2 1. Winter 2002 1 (6...

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Exam 2 Winter 2002 1 1. (6 pts) What is the oxidation state (number) for a) S in S 2 O 3 2– b) Bi in NaBiO 3 c) P in Mg 2 P 2 O 7 2. (8 pts) Indicate which of the following are oxidation-reduction reactions. Circle yes or no for each reaction. a) CaCO 3 + H 2 SO 4 —> CaSO 4 + H 2 O + CO 2 yes no b) CH 3 OH (l) + O 2 (g) —> CO 2 (g) + H 2 O (l) yes no 3. (6 pts) Consider the following oxidation-reduction reaction. H 2 (g) + Cl 2 (g) —> 2 HCl (aq) Write the balanced oxidation and reduction half-reactions for this reaction. Oxidation half-reaction : Reduction half-reaction : 4. (10 pts) For the following oxidation-reduction reaction, G o = – 887 kJ at 25 o C. 2 MnO 4 (aq) + 3 SO 3 2- (aq) + H 2 O (l) —> 2 MnO 2 (s) + 3 SO 4 2– (aq) + 2 OH (aq) Calculate the cell potential, E, when the concentrations of all of the dissolved substances are 0.1 M.
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Exam 2 Winter 2002 2 5. Answer the questions using the following half reactions: E o (V) Cl 2 + 2e —> 2 Cl 1.36
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Practice Exam 2 Blank 2002 - Exam 2 1. Winter 2002 1 (6...

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