The performance of the candidates was affected by the following weaknesses:

• delibrate alteration/cancellation of titre values/table to agree with/within the range of the teacher’s titre value(s)
• averaging of non concordant titres
• non adherence to instructions
• poor/wrong inferences
• inability to express answers to 3 significant figures
• omission/wrong units
• wrong terminologies e.g chalky ppt instead of gelatinous ppt
• poor time management by recopying the questions
• shallow understand of mole concepts calcualtion
• inability to differentiate between number of moles and concentration in mol dm-3
• inability to calculate the value of water of crystalization in Na2 CO3.yH2O
• inadequate knowledge on separation techniques
• inadequate knowledge on the used of laboratory apparatus.

The following remedies were suggested to overcome the weaknesses:

• adequate preparations by candidates
• prolong exposure to laboratory practical works
• correct and acceptable procedure of presenting experimental results should be stressed by teachers during teaching
• teachers/supervisors should not disclose their titre values to candidates
• school laboratories should be adequately equiped with apparatus and analytical chemicals and not industrial chemicals
• subject teachers should take part in the marking exericse so as to equip themselves with new pratices
•  schools should employ qualified chemistry teachers.