Chapter 18, Problem 18.39QE

Interpretation Introduction

Interpretation:

The cell should be drawn using given equation and also have to write the half reactions that occurs at each electrode.

  $\text{ Pb(s) +}\text{2}{\text{Ag}}^{\text{+}}\left(\text{aq}\right)\to {\text{Pb}}^{\text{2+}}\text{(aq)+2Ag}\left(\text{s}\right)$

Concept Introduction:

Voltaic cell or Galvanic cell:

The device to produce electricity by using chemical reactions. It consists of two half cells. Each half cell consists of a metal and a solution of a salt of metal. Two half cells are connected by salt bridge.

The chemical reaction in the half cell is an oxidation reduction (redox)reactions.

For example:

Cell diagram of voltaic or galvanic cell is as follows.

  $\begin{array}{l}\text{ Salt bridge}\\ \downarrow \\ {\text{Cu(s)|Cu}}^{\text{2+}}{\text{(aq) || Ag}}^{\text{+}}\text{(aq)|Ag(s)}\\ \text{\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_}\\ \downarrow \downarrow \\ \text{ Half cell Half cell}\end{array}$