The vinegar solution was diluted by a factor of five by three students in the same group, each student completing one trial at home. In each trial, a 500 mL measuring cup was filled with 100 mL of white vinegar, then distilled H2O was added and sufficiently mixed until the final volume of the solution was 500 mL. Then, 100 mL of this dilute solution was transferred to another 500 mL measuring cup to be used as the analyte solution. The average initial pH of this solution across three trials was 2.82.