Chemistry Paper 2 (Practical), WASSCE (PC 2ND), 2022

CANDIDATES’ STRENGTHS

Candidates were able to:

-           state the main product formed when methanol reacts with methanoic acid;
-           write an equation for the preparation of ethyne from calcium carbide;
-           state one use of ethyne;
-           state two differences between burning and rusting;
-           state one of the laws of chemical combination;
-           define the term heat of neutralization;
-           state one way of increasing the rate of dissolution of a solid in a liquid;
-           state two differences between a mixture and a compound;

-           state one major industrial application of fractional distillation, crystallization and sieving;
-           state the purpose of carbon and chlorine in the treatment of water for town supply.