Chapter 19, Problem 110FP

Interpretation Introduction

(a)

Interpretation:

To write anode half cell reaction.

Concept introduction:

An electrolytic cell consists of two half cells namely anode and cathode. Anode is the half cell where oxidation takes place and cathode is the half cell where reduction takes place. The capacity of an element to get oxidized ( to lose electrons) is called oxidation potential. From the given anode reaction, balance the reaction. The balanced equation is the anode half reaction.

Interpretation Introduction

(b)

Interpretation:

To write cathode half cell reaction.

Concept introduction:

An electrolytic cell consists of two half cells namely anode and cathode. Anode is the half cell where oxidation takes place and cathode is the half cell where reduction takes place. The capacity of an element to get reduced ( to gain electrons) is called reduction potential. From the given cathode reaction, balance the reaction. The balanced equation is the cathode half reaction.

Interpretation Introduction

(c)

Interpretation:

To calculate overall standard cell potential.

Concept introduction:

Overall standard cell potential is calculated from the following formula,

$E^0{}_{\text{cell}}=E^0{}_{\text{anode}}+E^0{}_{\text{cathode}}$

Summation of electrode potential of anode and electrode potential of cathode gives the overall standard potential.

Interpretation Introduction

(d)

Interpretation:

To determine the role of microbes in electrochemical process.

Concept introduction:

Generation of electricity is also possible by action of microbes in soil or organic matter. In fuel cell anode produces electrons by oxidation of organic compounds in soil.