Chapter 17, Problem 17.34CP

(a)

Interpretation Introduction

Interpretation:

The anode, cathode has to be labelled and the signs of the electrodes has to be indicated.

Concept Introduction:

PEM fuel cell:

Polymer exchange membrane fuel cell is type of fuel cell that is develop for transport application, stationary fuel-cell applications and portable fuel-cell applications.  It generated electricity and operates on the opposite principle of Proton exchange membrane electrolysis.

(b)

Interpretation Introduction

Interpretation:

The direction of electron flow has to be indicated.

Concept Introduction:

PEM fuel cell:

Polymer exchange membrane fuel cell is type of fuel cell that is develop for transport application, stationary fuel-cell applications and portable fuel-cell applications.  It generated electricity and operates on the opposite principle of Proton exchange membrane electrolysis.

(c)

Interpretation Introduction

Interpretation:

The substances that exists from each cell compartment has to be identified.

Concept Introduction:

PEM fuel cell:

Polymer exchange membrane fuel cell is type of fuel cell that is develop for transport application, stationary fuel-cell applications and portable fuel-cell applications.  It generated electricity and operates on the opposite principle of Proton exchange membrane electrolysis.

(d)

Interpretation Introduction

Interpretation:

The balanced reactions of anode, cathode and overall cell reaction has to be written and the standard cell potential has to be calculated.

Concept Introduction:

PEM fuel cell:

Polymer exchange membrane fuel cell is type of fuel cell that is develop for transport application, stationary fuel-cell applications and portable fuel-cell applications.  It generated electricity and operates on the opposite principle of Proton exchange membrane electrolysis.

Cell potential (EMF):

The maximum potential difference between two electrodes of voltaic cell is known as cell potential.

If standard reduction potentials of electrodes are known, the cell potential (EMF) is given by,

${\text{E}}_{\text{cell}}\text{=}{\text{E}}_{\text{cathode}}{\text{-E}}_{\text{anode}}$

Where,

$\begin{array}{l}{\text{E}}_{\text{cathode}}\text{is}\text{the}\text{reduction}\text{half}\text{cell potential}\\ {\text{E}}_{\text{anode}}\text{is}\text{the}\text{oxidation}\text{half}\text{cell potential}\end{array}$