Students observe demonstrations of the electrical conductivity of 0.10 M solutions of strong and weak acids and bases.
Students develop the concept of strong and weak acids and bases from the experimental data.
Students combine various acid-base indicators and use the mixtures to create a relative acid strength table for strong and weak acids and bases. For subsequent work on acids and bases, a standard table should be supplied to students. Introduce the standard table at this point, ensuring that students understand its various sections. Check for accuracy and determine if students recognize that the side of the equation with the weaker acid will be favoured as the stronger acid forces the acceptance of its proton. Ask students to explain the term amphiprotic.