Weakness/Remedies

Candidates’ weaknesses were noticeable in the following areas:




• some candidates used 2:1 as the mole ratio instead of 1:1


• inability to deduce correct inferences from observations made from reactions.


• poor knowledge of redox titration.


• poor knowledge of mole concept.


• poor knowledge of the difference that exists between Pb²⁺, Al³⁺ and Zn²⁺using chemical reagents.


• failure to write the answer to the calculated concentration of base in 3 significant figures.



The following remedies were however suggested:




candidates should



• read and understand redox titration.


• be familiar with the examination syllabus.


• improve on their study habit.


• improve on their mathematical skills.


• learn how to write the correct charge on ions.