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Topic 11: Redox and electrochemistry
23. Electrolytic cell diagram: Interpreting electrolytic diagrams
Answer questions 1 – 7 based on the cell diagram below.
Teacher Preview Copy
Teacher Preview Copy
KCl + electricity ------ > K + Cl2
1. In the cell diagram above, the anode is the
1) Negative electrode, where oxidation occurs
2) Negative electrode, where reduction occurs
3) Positive electrode, where oxidation occurs
4) Positive electrode, where reduction occurs
2. The cathode in this diagram is the
1) Positive electrode, where oxidation occurs
2) Negative electrode, where oxidation occurs
3) Positive electrode, where reduction occurs
4) Negative electrode, where reduction occurs
3. What occurs when the switch is closed?
+
1) K ions migrate toward the anode, where they will gain electrons
+
2) K ions migrate toward the anode, where they will gain electrons
+
3) K ions migrate toward the cathode where they will lose electrons
+
4) K ions migrate toward the cathode, where they will gain electrons
4. When the switch is closed in this cell, the
-
1) Cl ions migrate toward the cathode, where they will lose electrons
-
2) Cl ions migrate toward the cathode, where they will gain electrons
-
3) Cl ions migrate toward the anode, where they will lose electrons
-
4) Cl ions migrate toward the anode, where they will gain electrons
5. Which equation best represents the reaction at the negative electrode? Need Help? Study Book Pg 282 Set 34
-
+
1) K (aq) ------------------- K (s) + e
+
-
2) K (aq) + e ---------- K (s)
3) 2Cl (aq) -------------- Cl2 (g) + 2e -
-
-
-
4) 2Cl (aq) + 2e ------ Cl2 (g)
6. The redox reaction that occurs in this cell is best described as
1) Spontaneous and endothermic
2) Spontaneous and exothermic
3) Non-spontaneous and endothermic
4) Non-spontaneous and exothermic
7. Which statement best describes the reaction that occurs in this cell?
1) The reaction occurs in an electrolytic cell and requires the use of electrical energy
2) The reaction occurs in an electrolytic cell, and produces electrical energy
3) The reaction occurs in a voltaic cell, and requires the use of electrical energy
4) The reaction occurs in a voltaic cell, and produces electrical energy
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 335
Topic 11: Redox and electrochemistry
23. Electrolytic cell diagram: Interpreting electrolytic diagrams
Answer questions 1 – 7 based on the cell diagram below.
Teacher Preview Copy
Teacher Preview Copy
KCl + electricity ------ > K + Cl2
1. In the cell diagram above, the anode is the
1) Negative electrode, where oxidation occurs
2) Negative electrode, where reduction occurs
3) Positive electrode, where oxidation occurs
4) Positive electrode, where reduction occurs
2. The cathode in this diagram is the
1) Positive electrode, where oxidation occurs
2) Negative electrode, where oxidation occurs
3) Positive electrode, where reduction occurs
4) Negative electrode, where reduction occurs
3. What occurs when the switch is closed?
+
1) K ions migrate toward the anode, where they will gain electrons
+
2) K ions migrate toward the anode, where they will gain electrons
+
3) K ions migrate toward the cathode where they will lose electrons
+
4) K ions migrate toward the cathode, where they will gain electrons
4. When the switch is closed in this cell, the
-
1) Cl ions migrate toward the cathode, where they will lose electrons
-
2) Cl ions migrate toward the cathode, where they will gain electrons
-
3) Cl ions migrate toward the anode, where they will lose electrons
-
4) Cl ions migrate toward the anode, where they will gain electrons
5. Which equation best represents the reaction at the negative electrode? Need Help? Study Book Pg 282 Set 34
-
+
1) K (aq) ------------------- K (s) + e
+
-
2) K (aq) + e ---------- K (s)
3) 2Cl (aq) -------------- Cl2 (g) + 2e -
-
-
-
4) 2Cl (aq) + 2e ------ Cl2 (g)
6. The redox reaction that occurs in this cell is best described as
1) Spontaneous and endothermic
2) Spontaneous and exothermic
3) Non-spontaneous and endothermic
4) Non-spontaneous and exothermic
7. Which statement best describes the reaction that occurs in this cell?
1) The reaction occurs in an electrolytic cell and requires the use of electrical energy
2) The reaction occurs in an electrolytic cell, and produces electrical energy
3) The reaction occurs in a voltaic cell, and requires the use of electrical energy
4) The reaction occurs in a voltaic cell, and produces electrical energy
Copyright©2010 E3 Scholastic Publishing. All Rights Reserved. SurvivingChem.com 335
