1412 Exam 3 - CHEM 1412 EXAM 3(19 23 and 24 Name Score Part...

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CHEM 1412 EXAM # 3  (19, 23, and 24)                  Name: _________________________                                                Score:   Part I-Please DO NOT circle. Write the correct answer in space provided.   _____1. Which energy conversion below takes place in a galvanic cell?               A) electrical to chemical          B) chemical to electrical               C) mechanical to chemical      D) electrical to mechanical _____2. Consider a galvanic cell based on the reaction below, what is the coefficient of Fe 3+  in the                balanced  equation in acidic solution?   Fe 2+  + Cr 2 O 7 2-    Fe 3+  + Cr 3+               A) 1          B) 2          C) 3               D) none of these _____3. How many electrons are transferred in the following reaction? 2ClO 3  + 12H +  + 10I      5I 2  + Cl 2  + 6H 2 O                     A) 10                           B) 12                           C) 5                           D) 30 _____4. Which of the following is true for the cell shown here?   Zn (s)    Zn 2+ (aq)     Cr 3+ (aq)    Cr (s) _____5. Which of the following reactions is possible at the anode of a galvanic cell? _____6. The standard reduction potentials for the following half reactions are given as follows; 1
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               Cr 3+  + 3e    Cr (s)             E 0  = -0.73 V                Br 2(aq)  + 2e    2Br -  E 0  = +1.09 V                         what is the E 0  for this cell?                  A) 1.82 V                          B) 0.36 V                        C) 4.75 V                             D) 1.79 V                  _____7. A voltaic cell has an E 0  value of +1.00 V. The reaction :               A) is not spontaneous      B) has K =1                    C) has a negative  G 0         D) has  G 0  = 0 _____8. In the following nuclear equation, identify the missing particle.
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