2022 WAEC CHEMISTRY PRACTICAL INSTRUCTIONS
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 50cm³ of capacity
(b) One pipette, either 20cm³ or 25cm³ (All candidates at one center must use pipettes of the same volume, these should be clean and free from grease).
(c) The usual apparatus for titration
(d) The usual apparatus and reagents for qualitative work including the following with all reagents appropriately labeled:
(i) 10% dilute sodium hydroxide solution
(ii) dilute hydrochloric acid
(iii) dilute trioxonitrate(v) acid
(iv) silver trioxonitrate(v) acid
(v) acidified potassium dichromate solution
(vi) aqueous ammonia
(vii) lime water
(viii) red and blue litmus paper
(ix) dilute tetraoxosulphate(vi)
(x) aqueous barium chloride
(e) Spatula
(f) Filtration apparatus,
(g) One beaker
(h) One boiling tube
(i) Four test tubes
(j) Starch solution indicator
(k) Glass rod
(l) Wash bottle containing distilled/deionized water,
(m) Burning splint,
(n) Watch glass
(o) Bunsen Burner/source of heat
(p) Droppers
3. (a) 150cm³ of iodine solution in a corked flask or bottle labeled ‘An’. These should all be the same containing 25.4g of I₂ in 6.0g Kl per dm³ of solution.
(b) 150cm³ of sodium thiosulphate pentahydrate solution in a corked flask or bottle labeled ‘Bn’. These should all be the same containing 24.82g of Na₂S₂O₃ per dm³ of solution.
(c) One spatulaful of ammonium ferrous sulphate, (NH₄)₂Fe(SO₄)₂.6H₂O in a specimen bottle labeled ‘Cn’. This must be the same for all candidates.
4. In all cases, more materials may be issued if required.
5. The actual concentrations of A and B must be stated on the Supervisor's Report Form. The candidates will assume that the concentrations are exactly as stated in the question paper.
6. It should be noted that schools are not allowed to amend the information provided on the question paper or substitute any substance/solution for those specified in these instructions.
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 50cm³ of capacity
(b) One pipette, either 20cm³ or 25cm³ (All candidates at one center must use pipettes of the same volume, these should be clean and free from grease).
(c) The usual apparatus for titration
(d) The usual apparatus and reagents for qualitative work including the following with all reagents appropriately labeled:
(i) 10% dilute sodium hydroxide solution
(ii) dilute hydrochloric acid
(iii) dilute trioxonitrate(v) acid
(iv) silver trioxonitrate(v) acid
(v) acidified potassium dichromate solution
(vi) aqueous ammonia
(vii) lime water
(viii) red and blue litmus paper
(ix) dilute tetraoxosulphate(vi)
(x) aqueous barium chloride
(e) Spatula
(f) Filtration apparatus,
(g) One beaker
(h) One boiling tube
(i) Four test tubes
(j) Starch solution indicator
(k) Glass rod
(l) Wash bottle containing distilled/deionized water,
(m) Burning splint,
(n) Watch glass
(o) Bunsen Burner/source of heat
(p) Droppers
3. (a) 150cm³ of iodine solution in a corked flask or bottle labeled ‘An’. These should all be the same containing 25.4g of I₂ in 6.0g Kl per dm³ of solution.
(b) 150cm³ of sodium thiosulphate pentahydrate solution in a corked flask or bottle labeled ‘Bn’. These should all be the same containing 24.82g of Na₂S₂O₃ per dm³ of solution.
(c) One spatulaful of ammonium ferrous sulphate, (NH₄)₂Fe(SO₄)₂.6H₂O in a specimen bottle labeled ‘Cn’. This must be the same for all candidates.
4. In all cases, more materials may be issued if required.
5. The actual concentrations of A and B must be stated on the Supervisor's Report Form. The candidates will assume that the concentrations are exactly as stated in the question paper.
6. It should be noted that schools are not allowed to amend the information provided on the question paper or substitute any substance/solution for those specified in these instructions.
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2022 WAEC Physics Essay and Objective Questions and Answers Now Available
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