Help with Anodes and Cathodes

Practice Questions

High School Chemistry › Help with Anodes and Cathodes

Questions

10

1

Consider the following electrolytic cell:

$Ni + Fe^{2+} \rightarrow Ni^{2+} + Fe$ $E^{\circ} = -0.21V$

What happens at the anode in the electrolytic cell?

2

Which of the following species is being produced at the anode?

$Li^{+}_{(aq)} + K_{(s)} \rightarrow Li_{(s)} + K^{+}_{(aq)}$

3

$Li^{+}_{(aq)} + e^- \rightarrow Li_{(s)}$ $\varepsilon ^o = -3.04$

$Mg^{2+}_{(aq)} +2e^- \rightarrow Mg_{(s)}$ $\varepsilon ^o= -2.38$

$Ni^{2+}_{(aq)}+ 2e^- \rightarrow Ni_{(s)}$ $\varepsilon ^o = -0.23$

$Ag^{2+}_{(aq)} + 2e^- \rightarrow Ag_{(s)}$ $\varepsilon ^o = 0.80$

$Cl_2_{(g)}+ 2e^- \rightarrow 2Cl^-_{(aq)}$ $\varepsilon ^o= 1.36$

Which of the following species would mostly likely be oxidized, if placed in a electrochemical cell with another species?

4

$2Li^{+}_{(aq)} + Mg_{(s)} \rightarrow 2Li_{(s)} + Mg^{2+}_{(aq)}$

Which of the following species is being produced at the cathode?

5

Consider the following ionic equation for a galvanic cell:

$2Fe^{3+} + Sn^{2+} \rightarrow 2Fe^{2+} + Sn^{4+}$

Which of the following takes place at the anode?

6

Consider the following redox net ionic reaction:

$Zn_{(s)} + Cu^{2+}_{(aq)} \rightarrow Zn^{2+}_{(aq)} + Cu_{(s)}$

Which half reaction takes place at the cathode?

7

$Li^{+}_{(aq)} + e^- \rightarrow Li_{(s)}$ $\varepsilon ^o = -3.04$

$Mg^{2+}_{(aq)} +2e^- \rightarrow Mg_{(s)}$ $\varepsilon ^o= -2.38$

$Ni^{2+}_{(aq)}+ 2e^- \rightarrow Ni_{(s)}$ $\varepsilon ^o = -0.23$

$Ag^{2+}_{(aq)} + 2e^- \rightarrow Ag_{(s)}$ $\varepsilon ^o = 0.80$

$Cl_2_{(g)}+ 2e^- \rightarrow 2Cl^-_{(aq)}$ $\varepsilon ^o= 1.36$

Which of the following species would mostly likely be reduced, if placed in a electrochemical cell with another species?

8

$Hg^{2+}_{(aq)} + 2e^- \rightarrow Hg_{(l)}$ $\varepsilon ^o = 0.85$

$Cu^{+}_{(aq)} +e^-\rightarrow Cu_{(s)}$ $\varepsilon ^o = 0.34$

$2H^{+}_{(aq)} + 2e^- \rightarrow H_2_{(g)}$ $\varepsilon ^o = 0$

$Zn^{2+}_{(aq)} + 2e^- \rightarrow Zn_{(s)}$ $\varepsilon ^o = -0.76$

$Cr^{3+}_{(aq)} + 3e^- \rightarrow Cr_{(s)}$ $\varepsilon ^o = -0.74$

Which of the following species would mostly likely be reduced, if placed in a galvanic cell with another species?

9

Which of the following species is being produced at the cathode?

$Ni^{2+}_{(aq)} + Fe_{(s)} \rightarrow Ni_{(s)} + Fe^{2+}_{(aq)}$

10

$2Li^{+}_{(aq)} + Mg_{(s)} \rightarrow2Li_{(s)} + Mg^{2+}_{(aq)}$

Which of the following species is being produced at the anode?

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