WAEC 2023 Chemistry Practical Specimens Questions and Answers
Thursday, 18 May, 2023
CHEMISTRY SPECIMENS
1. Instruction
2. In addition to the fittings and reagents normally found in a chemistry laboratory, the following apparatus and materials will be required by each candidate:
(a) one burette of 50 Cm³ capacity:
Each candidate should be supplied with the following, where ‘n’ is the candidate’s serial number.
(a) 150cm³ of a solution of HCl in a corked flask or bottle labelled ‘An’. These should all be the same containing 8.5cm³ of concentrated HCl per dm³ of solution,
b) 150 cm³ of Na2CO3 10H2O in a corked flask or bottle labelled ‘Bn’. These should all be the same containing 5.0g of the hydrated salt per dm³ of solution,
(c) One spatulaful of glucose in a specimen bottle labelled ‘Ca’. This must be the same for all candidates.
(d) One spatulaful of zinc oxide powder in a specimen bottle
labelled ‘Dn’. This must be the same for ail candidates.
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