Chapter 14, Problem 14.8P

Interpretation Introduction

Interpretation:

A line notation and two reduction half reactions for the given pictures have to be written.

Concept Introduction:

Line notation:

Electrochemical cells are explained with the help of notation expressed with two symbols: $|phaseboundary\Vert saltbridge$

Each phase boundary is represented by a vertical line and the electrodes are seen at the extreme right and left hands of the line diagram.

An example of line notation is ${\text{Cd}}_{\left(\text{s}\right)}|\text{Cd}{\left({\text{NO}}_{\text{3}}\right)}_{\text{2(aq)}}\Vert {\text{AgNO}}_{\left(\text{3}\right)\text{(aq)}}|{\text{Ag}}_{\left(\text{s}\right)}$

Half Reactions:

A half reaction can be defined as component of redox reaction that is either Oxidation or reduction reaction. The change in oxidation states of individual substances present in redox reaction gives the half reaction. Half reactions are common methods of balancing redox reactions.