CANDIDATES’ WEAKNESSES AND SUGGESTED REMEDIES

The weaknesses associated with the candidates’ performance include:

• inability to use concordant values to calculate the average volume of acid used
• inability to determine the correct mole ratio from a reaction equation;
• inability to express the concentration in moldm-3 of solutions in 3 s.f.;
• poor knowledge of units;
• inability to write correct inferences to observations;
• non adherence to instructions.

The following remedies were however suggested:

• candidates should use concordant values to determine their average titres;
• learn how to deduce mole ratio from reaction equations;
• should express the concentration of solutions in 3 s.f.;
• understand the demands of the questions;;
• use correct units when required