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Topic 11: Redox and electrochemistry
22. Voltaic cell: Determining changes in voltaic cell reaction
Answer questions 1 – 10 based on the cell diagram below.
b
a e c
d f
Teacher Preview Copy
1. In the electrochemical diagram, the Mg serves as the
1) Cathode, where oxidation occurs 3) Anode, where oxidation occurs
2) Cathode, where reduction occurs
4) Anode, where reduction occurs
2. Zn in this electrochemical cell acts as the
1) Anode, and is the site for reduction 3) Anode, and is the site for oxidation
4) Cathode, and is the site for oxidation
2) Cathode, and is the site for reduction
3. Which is true of Mg in this cell? 3) It is reduced by gaining protons
1) It is reduced by gaining electrons
2) It is oxidized by losing electrons 4) It is oxidized by losing protons
2) It is oxidized Teacher Preview Copy
4. The Zn electrode in this diagram is the 3) Cathode, which is negative
1) Anode, which is negative
2) Anode, which is positive 4) Cathode, which is positive
5. When the switch is closed, the Zn in this reaction will be
2+
1) The anode 3) Oxidized
2) The cathode 4) Reduced
6. Which change occurs with Mg in this cell?
2+
1) Mg is oxidized to Mg 3) Mg is oxidized to Zn
2+
2) Mg is reduced to Mg 4) Mg is reduced to Zn
7. Which is true of the Mg ion in this cell?
2+
1) It is reduced 3) It migrate across the salt bridge
2+ 4) it migrate across the external conductor
8. In the given electrochemical diagram, the Zn ions 3) Gains electrons
1) Gain protons
2) Lose protons 4) Lose electrons
9. When the switch is closed, which series of letters show the path and direction of Mg ions?
2+
1) abc 3) cba
2) def 4) fed
10. When the switch is closed, which letters show the path and direction of the electrons?
1) abc 3) cba
2) def
4) fed
334 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Topic 11: Redox and electrochemistry
22. Voltaic cell: Determining changes in voltaic cell reaction
Answer questions 1 – 10 based on the cell diagram below.
b
a e c
d f
Teacher Preview Copy
1. In the electrochemical diagram, the Mg serves as the
1) Cathode, where oxidation occurs 3) Anode, where oxidation occurs
2) Cathode, where reduction occurs
4) Anode, where reduction occurs
2. Zn in this electrochemical cell acts as the
1) Anode, and is the site for reduction 3) Anode, and is the site for oxidation
4) Cathode, and is the site for oxidation
2) Cathode, and is the site for reduction
3. Which is true of Mg in this cell? 3) It is reduced by gaining protons
1) It is reduced by gaining electrons
2) It is oxidized by losing electrons 4) It is oxidized by losing protons
2) It is oxidized Teacher Preview Copy
4. The Zn electrode in this diagram is the 3) Cathode, which is negative
1) Anode, which is negative
2) Anode, which is positive 4) Cathode, which is positive
5. When the switch is closed, the Zn in this reaction will be
2+
1) The anode 3) Oxidized
2) The cathode 4) Reduced
6. Which change occurs with Mg in this cell?
2+
1) Mg is oxidized to Mg 3) Mg is oxidized to Zn
2+
2) Mg is reduced to Mg 4) Mg is reduced to Zn
7. Which is true of the Mg ion in this cell?
2+
1) It is reduced 3) It migrate across the salt bridge
2+ 4) it migrate across the external conductor
8. In the given electrochemical diagram, the Zn ions 3) Gains electrons
1) Gain protons
2) Lose protons 4) Lose electrons
9. When the switch is closed, which series of letters show the path and direction of Mg ions?
2+
1) abc 3) cba
2) def 4) fed
10. When the switch is closed, which letters show the path and direction of the electrons?
1) abc 3) cba
2) def
4) fed
334 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
