Answer
In order to check the presence of a strong, weak or nonelectrolyte in a solution, we can put two metal electrodes with a light bulb within the circuit in the solution. The light bulb will glow according to the concentration of ions in the solution.
$Na_2SO_4$: Glows brightly, strong electrolyte.
$HCN$: Glows dimly, weak electrolyte.
$CH_3COOH$: Glows dimly, weak electrolyte.
$CH_3OH$: Does not glow, nonelectrolyte.
$HF$: Glows dimly, weak electrolyte.
$HClO_4$: Glows brightly, strong electrolyte.
$HCOOH$: Glows dimly, weak electrolyte.
$NH_3$: Glows dimly, weak electrolyte.
Work Step by Step
See Figure 6-1 (Page 209).
