CH262_2008SPRING_EXAM2_PROFSOLN_[0]

CH262_2008SPRING_EXAM2_PROFSOLN_[0] - CH 262 EXAM #2 Spring...

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CH 262 EXAM #2 Spring 2008 Assume T = 298.15K in all cases. Show all of your work. 1. Determine the solubility product constant of PbI 2 from the Table of half-cell reactions. 2. The solubility product constant of Mn(IO 3 ) 2 is K sp = 4.37 x 10 -7 . Calculate the solubility a) in water ignoring the mean ionic activity coefficient b) in water taking ionic interactions into account c) in 0.01 molal NaCl taking ionic interactions into account d) Discuss all of your answers. 3. For the following cell at 298K: Fe(s)|(Fe +3 (aq, a = 0.6)| Cd +2 (aq, a=0.001)| Cd(s) a. Write the half-cell reactions and the overall cell reaction. b. Show the half-cell potentials c. Calculate the overall cell potential. d. Is this a galvanic or electrolytic cell, as written? 4. For the following cell, the overall cell potential is 0.7533V: H 2 (g,P o )|H 2 SO 4 (aq, b)| Hg 2 SO 4 (s)| Hg(s) a. Write the half-cell reactions and the overall cell reaction.
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CH262_2008SPRING_EXAM2_PROFSOLN_[0] - CH 262 EXAM #2 Spring...

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