Chemistry Paper 3 WASSCE (PC), 2016

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