Galvanic and Electrolytic Cells

Practice Questions

Physical Chemistry › Galvanic and Electrolytic Cells

Questions

6

1

$Na^{+}+e^{-}\rightarrow Na$ $E\degree=-2.71V$

$Mn^{2+}+2e^{-}\rightarrow Mn$ $E\degree=-1.18V$

For an electrolytic cell containing the two half-cells shown, the __________ reaction will take place and the $E_{cell}\degree$ will be __________.

2

What will happen when the two given half-cells are connected by a salt bridge to form a galvanic cell?

$Cu^{+}+e^{-}\rightarrow Cu$ $E\degree=0.52V$

$Pb^{2+}+2e^{-}\rightarrow Pb$ $E\degree=-0.13V$

3

The Gibbs free energy of a redox reaction is __________ for a galvanic cell and is __________ for an electrolytic cell.

4

Which of the following is true regarding an electrolytic cell?

5

Listed below are standard reduction potentials for a few elements.

Lithium:

Iron (with oxidation state):

Aluminum:

Given this information, which of the following redox reactions can be found in a galvanic cell?

I. $Fe^2^+ + Li \rightarrow 2Li^+ + Fe$

II. $Al + 3Fe^2^+ \rightarrow 2Al^3^+ + Fe$

III. $3Li^+ + Al \rightarrow Al^3^+ + Li$

6

What type of energy input is required for a galvanic cell?

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