Weakness and Remedies
Candidates could not:
Calculate the concentration of HCl in P, in mol dm-3;
Calculate the amount of HCl in 6.15 dm3 o P;
Write correct charges on cations and anions.
The following remedies were however suggested:
Candidates should:
Understand the demands of the questions before responding to them;
Be familiar with the charges on anions and cations;
Learn how to write correct inferences from reaction observations.