Weakness/Remedies
Candidates:
- 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.
- 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.
Candidates’ weaknesses were noticeable in the following areas:
The following remedies were however suggested:
candidates should