Help with Electrolytic Cells

Practice Questions

High School Chemistry › Help with Electrolytic Cells

Questions

8

1

Toward which pole do the electrons travel in an electrolytic cell?

2

How does an electrolytic cell differ from a galvanic cell?

3

$Mg^{2+}_{(aq)} + 2e^- \rightarrow Mg_{(s)}$ $\varepsilon ^o = -2.76$

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

The following reaction below takes place in an electrochemical cell:

$Mg_{(s)} + Ca^{2+}_{(aq)} \rightarrow Mg^{2+}_{(aq)} + Ca_{(s)}$

Is the cell galvanic or voltaic?

4

$Mg^{2+}_{(aq)} + 2e^- \rightarrow Mg_{(s)}$ $\varepsilon ^o = -2.76V$

$Ca^{2+}_{(aq)} + 2e^- \rightarrow Ca_{(s)}$ $\varepsilon ^o = -2.38V$

The following reaction below takes place in an electrochemical cell:

$Mg^{2+}_{(aq)} + Ca_{(s)} \rightarrow Mg_{(s)} + Ca^{2+}_{(aq)}$

Which of the following best describes this cell?

5

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

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

For the following reaction to occur does the does the electrochemical cell voltaic or galvanic?

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

6

How does an electrolytic cell differ from a galvanic cell?

7

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

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

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

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

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

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

8

How does an electrolytic cell differ from a galvanic cell?

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