Students perform acid-base titrations to determine the concentration and composition of solutions. Students standardize solutions using a primary standard. As enrichment, students may perform a back titration to analyse an antacid tablet or the purity of a solid carbonate.
Students produce pH versus volume graphs for a strong acid strong base titration.
Data could be collected with a pH probe interfaced with a computer able to plot the titration curve. Students design titration experiments including the appropriate acids or bases, indicators, data table, and calculations. Assess students' graphs of pH titration curves. Note whether they refer to the hydrolysis of the anion or cation for the weak acid or base respectively. Check that students have used the correct formulae.