Practice: Which of the following statements is true for a salt bridge?
Concept #1: Galvanic Cell (Voltaic Cell)
Example #1: The purpose of a galvanic cell is to:
a) Purify solids b) Allow for only oxidation
c) Generate electricity d) To consume electricity
Example #2: How many electrons are transferred between the zinc and copper electrodes in the galvanic cell?
a) 1 b) 2 c) 3 d) 4
Concept #2: Electrolytic Cell
Example #3: : Identify the location within an electrolytic cell where the loss of electrons will occur.
a) Cathode b) Anode c) Salt Bridge d) Electrode e) Voltmeter
Concept #3: Understanding Electrolytic Cell
Example #4: Which of the following is true about an electrolytic cell?
a) It changes chemical energy into electrical energy.
b) It uses a positive cathode.
c) It uses an electrical current to make a nonspontaneous reaction go.
d) All of the above.
Practice: Which of the following statements is true for a salt bridge?
Practice: Which of the following statements is TRUE for a voltaic cell, but FALSE for an electrolytic cell?
I. The flow of electrons is spontaneous.
II. Oxidation occurs at the anode.
III. Electrons flow from the anode to the cathode.
Practice: What is the balanced half reaction that occurs at the anode in the overall cell reaction of a voltaic cell?
3 MnO4–(aq) + 5 Fe(s) → 3 Mn2+(aq) + 5 Fe3+(aq)
