Question

Sketch a galvanic cell, and explain how it works. Look at Figs. 11.1 and 11.2. Explain what is occurring in each container and why the cell in Fig. 11.2 “works” but the one in Fig. 11.1 does not.

Short answer

A galvanic cell and its working have been explained. The cell in figure 11.1 does not work as it does not contain a salt bridge, while the cell in figure 11.2 works due to the presence of a salt bridge.

Step-by-step solution

Definition of galvanic cell and its electrodes

A device in which free energy from the chemical and physical process can be converted into electrical energy is called a galvanic cell. These cells contain two electrodes that are immersed in one or more electrolytes.

Structure of galvanic cell

The galvanic cell structure can be drawn as:

Working of galvanic cell

The cell in figure 11.1 does not work as it does not contain a salt bridge so that ions can flow to maintain the net charge of zero in each compartment while the cell in figure 11.2 works due to the presence of a salt bridge.