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Topic 11: Redox and electrochemistry
25. Electroplated diagram: Interpreting electroplating cell diagram
Base your answers to questions 1 – 9 on the cell diagram below.
1. Which species are oxidized and reduced in this cell?
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2+
1) Sn is oxidized, and Sn is reduced 3) Cu is oxidized, and Sn is reduced
2+
2) Sn is oxidized, and Sn is reduced
4) Sn is oxidized, and Cu is reduced
2+
2. When the switch is closed, Sn is 3) Reduced, and Sn will be coated with Cu
1) Oxidized, and Sn will be coated with Cu
2) Oxidized, and Cu will be coated with Sn 4) Reduced, and Cu will be coated with Sn
3. Which best explains why the mass of electrode B increases as a redox reaction occurs in this cell?
3) Electrode B is coated with more copper
1) Electrode B is oxidized
2) Electrode B is losing electrons 4) Electrode B is coated with tin
4. The battery in this cell acts as the 3) Reducing agent
1) External conduit
2) External energy source 4) Oxidizing agent
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5. Electrode A in this diagram is the
1) Anode, where oxidation is occurring 3) Cathode, where oxidation is occurring
2) Cathode, where reduction is occurring 4) Anode, where reduction is occurring Need Help? Study Book Pg 284 Set 36
6. Which statement is true of electrode B when the switch is closed in this cell diagram?
1) B is the cathode, where oxidation is occurring
2) B is the cathode, where reduction is occurring
3) B is the anode, where oxidation is occurring
4) B is the anode, where reduction is occurring
7. Which equation correctly shows the reaction at electrode A?
-
2+
1) Sn(s) + 2e -------- Sn (aq)
2+
-
2) Sn (aq) + 2e ------- Sn(s)
2+
-
3) Sn(s) --------------------- Sn (aq) + 2e
-
2+
4) Sn (aq) ----------------- Sn(s) + 2e
8. When the switch is closed, the half-reaction that occurs at electrode B is represent by which equation?
2+
-
1) Sn(s) + 2e -------- Sn (aq)
2+
-
2) Sn (aq) + 2e -------- Sn(s)
2+
-
3) Sn(s) ---------------- ----- Sn (aq) + 2e
-
2+
4) Sn (aq) --------------- -- Sn(s) + 2e
9. The redox reaction in this cell is
1) Spontaneous, occurring in an electrolytic cell
2) Spontaneous, occurring in a voltaic cell
3) Non-spontaneous, occurring in an electrolytic cell
4) Non-spontaneous, occurring in a voltaic cell
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 337
Topic 11: Redox and electrochemistry
25. Electroplated diagram: Interpreting electroplating cell diagram
Base your answers to questions 1 – 9 on the cell diagram below.
1. Which species are oxidized and reduced in this cell?
Teacher Preview Copy
2+
1) Sn is oxidized, and Sn is reduced 3) Cu is oxidized, and Sn is reduced
2+
2) Sn is oxidized, and Sn is reduced
4) Sn is oxidized, and Cu is reduced
2+
2. When the switch is closed, Sn is 3) Reduced, and Sn will be coated with Cu
1) Oxidized, and Sn will be coated with Cu
2) Oxidized, and Cu will be coated with Sn 4) Reduced, and Cu will be coated with Sn
3. Which best explains why the mass of electrode B increases as a redox reaction occurs in this cell?
3) Electrode B is coated with more copper
1) Electrode B is oxidized
2) Electrode B is losing electrons 4) Electrode B is coated with tin
4. The battery in this cell acts as the 3) Reducing agent
1) External conduit
2) External energy source 4) Oxidizing agent
Teacher Preview Copy
5. Electrode A in this diagram is the
1) Anode, where oxidation is occurring 3) Cathode, where oxidation is occurring
2) Cathode, where reduction is occurring 4) Anode, where reduction is occurring Need Help? Study Book Pg 284 Set 36
6. Which statement is true of electrode B when the switch is closed in this cell diagram?
1) B is the cathode, where oxidation is occurring
2) B is the cathode, where reduction is occurring
3) B is the anode, where oxidation is occurring
4) B is the anode, where reduction is occurring
7. Which equation correctly shows the reaction at electrode A?
-
2+
1) Sn(s) + 2e -------- Sn (aq)
2+
-
2) Sn (aq) + 2e ------- Sn(s)
2+
-
3) Sn(s) --------------------- Sn (aq) + 2e
-
2+
4) Sn (aq) ----------------- Sn(s) + 2e
8. When the switch is closed, the half-reaction that occurs at electrode B is represent by which equation?
2+
-
1) Sn(s) + 2e -------- Sn (aq)
2+
-
2) Sn (aq) + 2e -------- Sn(s)
2+
-
3) Sn(s) ---------------- ----- Sn (aq) + 2e
-
2+
4) Sn (aq) --------------- -- Sn(s) + 2e
9. The redox reaction in this cell is
1) Spontaneous, occurring in an electrolytic cell
2) Spontaneous, occurring in a voltaic cell
3) Non-spontaneous, occurring in an electrolytic cell
4) Non-spontaneous, occurring in a voltaic cell
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 337
