Chapter 20, Problem 39A

Interpretation Introduction

(a)

Interpretation:

The standard cell notation of $\text{Zn}|{\text{Zn}}^{\text{+2}}$ is to be represented.

Concept introduction:

A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.

Answer to Problem 39A

The standard cell notation of $\text{Zn}|{\text{Zn}}^{\text{+2}}$ standard hydrogen electrode is

$\text{Zn}|{\text{Zn}}^{\text{+2}}\Vert {\text{H}}^{\text{+}}|{\text{H}}_{\text{2}}$

Explanation of Solution

1. A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.
2. The anode of the cell is represented by writing metal or solid phase first then the electrolyte while the cathode is represented by writing the electrolyte first and then metal and soli phase.
3. The salt bridge which separates the two half cells is indicated by two vertical lines

So, the cell representation is given as

The standard cell notation of $\text{Zn}|{\text{Zn}}^{\text{+2}}$ standard hydrogen electrode is

$\text{Zn}|{\text{Zn}}^{\text{+2}}\Vert {\text{H}}^{\text{+}}|{\text{H}}_{\text{2}}$

(b)

Interpretation Introduction

Interpretation:

The standard cell notation of ${\text{Cu}}^{\text{+2}}|\text{Cu}$ is to be represented.

Concept introduction:

A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.

Answer to Problem 39A

The standard cell notation of ${\text{Cu}}^{\text{+2}}|\text{Cu}$ standard hydrogen electrode is

${\text{H}}_{\text{2}}|{\text{H}}^{\text{+}}\Vert {\text{Cu}}^{\text{+2}}|\text{Cu}$

Explanation of Solution

1. A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.
2. The anode of the cell is represented by writing metal or solid phase first then the electrolyte while the cathode is represented by writing the electrolyte first and then metal and soli phase.
3. The salt bridge which separates the two half cells is indicated by two vertical lines

The standard cell notation of ${\text{Cu}}^{\text{+2}}|\text{Cu}$ standard hydrogen electrode is

${\text{H}}_{\text{2}}|{\text{H}}^{\text{+}}\Vert {\text{Cu}}^{\text{+2}}|\text{Cu}$

(c)

Interpretation Introduction

Interpretation:

The standard cell notation of ${\text{Hg}}^{\text{+2}}|\text{Hg}$ is to be represented.

Concept introduction:

A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.

Answer to Problem 39A

The standard cell notation of ${\text{Hg}}^{\text{+2}}|\text{Hg}$ standard hydrogen electrode is

${\text{H}}_{\text{2}}|{\text{H}}^{\text{+}}\Vert {\text{Hg}}^{\text{+2}}|\text{Hg}$

Explanation of Solution

1. A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.
2. The anode of the cell is represented by writing metal or solid phase first then the electrolyte while the cathode is represented by writing the electrolyte first and then metal and soli phase.
3. The salt bridge which separates the two half cells is indicated by two vertical lines

The standard cell notation of ${\text{Hg}}^{\text{+2}}|\text{Hg}$ standard hydrogen electrode is

${\text{H}}_{\text{2}}|{\text{H}}^{\text{+}}\Vert {\text{Hg}}^{\text{+2}}|\text{Hg}$

(d)

Interpretation Introduction

Interpretation:

The standard cell notation of $\text{Al}|{\text{Al}}^{\text{+3}}$ is to be represented.

Concept introduction:

A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.

Answer to Problem 39A

The standard cell notation of $\text{Al}|{\text{Al}}^{\text{+3}}$ standard hydrogen electrode is

$\text{Al}|{\text{Al}}^{\text{+3}}\Vert {\text{H}}^{\text{+}}|{\text{H}}_{\text{2}}$

Explanation of Solution

1. A galvanic cell is represented by writing the anode where oxidation occurs on the left hand side and cathode where reduction occurs on right hand side.
2. The anode of the cell is represented by writing metal or solid phase first then the electrolyte while the cathode is represented by writing the electrolyte first and then metal and soli phase.
3. The salt bridge which separates the two half cells is indicated by two vertical lines

The standard cell notation of $\text{Al}|{\text{Al}}^{\text{+3}}$ standard hydrogen electrode is

$\text{Al}|{\text{Al}}^{\text{+3}}\Vert {\text{H}}^{\text{+}}|{\text{H}}_{\text{2}}$