WAEC Practical Chemistry Specimen 2024/2025: Both candidates and exam administrators must follow particular instructions and safety precautions during the next WAEC Chemistry Practical examination for the academic year 2024/2025.
This article gives a thorough rundown of all the equipment, supplies, and guidelines needed for the practical test. The WAEC Chemistry Practical Specimen for the 2024/2025 examination plays a vital role in assessing the practical skills and comprehension of chemical concepts among chemistry students. It is imperative that both candidates and examiners strictly adhere to the provided guidelines and safety measures to maintain fairness and integrity in the examination.
The complete list of apparatus and materials required for the examination includes:
1. One 50 cm3 burette.
2. One 20 cm3 or 25 cm3 pipette (all candidates at a particular center must use pipettes of the same volume, and they should be clean and devoid of grease).
3. Standard titration equipment.
4. Apparatus and reagents for qualitative analysis, including appropriately labeled containers of:
(i) Dilute sodium hydroxide solution.
(ii) Dilute hydrochloric acid.
(iii) Dilute nitric acid.
(iv) Silver nitrate solution.
(v) Acidified potassium dichromate solution.
(vi) Aqueous ammonia.
(vii) Lime water.
(viii) Red and blue litmus paper.
(ix) Dilute sulfuric acid.
(x) Fehling’s solution A & B.
5. Spatula.
6. Filtration apparatus.
7. One beaker.
8. One boiling tube.
9. Four test tubes.
10. Methyl orange as an indicator.
11. Glass rod.
12. Wash bottle containing distilled or deionized water.
13. Burning splint.
14. Watch glass.
15. Bunsen burner or heat source.
16. Droppers.
17. Mathematical table or calculator.
Each candidate will also receive the following labeled solutions and substances:
1. Specimen (a): Hydrochloric Acid Solution (HCl)
– Labeled ‘An,’ this solution contains 150 cm3 of Hydrochloric Acid (HCl). All ‘An’ bottles should have the same concentration, which is 8.5 cm3 of concentrated HCl per dm3 of solution. HCl is a strong acid used in various chemical experiments, including titrations and acid-base reactions.
2. Specimen (b): Sodium Carbonate Decahydrate (Na2CO3·10H2O) Solution
– Labeled ‘Bn,’ this solution contains 150 cm3 of Sodium Carbonate Decahydrate (Na2CO3·10H2O). All ‘Bn’ bottles should have the same concentration, which is 5.0 grams of the hydrated salt per dm3 of solution. Sodium Carbonate Decahydrate is commonly used in experiments, particularly in titrations and carbonate tests.
3. Specimen (c): Glucose
– Candidates will receive a spatulaful of glucose in a specimen bottle labeled ‘Cn.’ It is essential that all candidates receive the same quantity of glucose. Glucose is a simple sugar used in experiments related to carbohydrates, such as testing for reducing sugars or conducting fermentation tests.
4. Specimen (d): Zinc Oxide (ZnO) Powder
– Labeled ‘Dn,’ this specimen contains a spatulaful of zinc oxide powder. All candidates should receive the same amount of zinc oxide powder. Zinc oxide is a white, powdery compound used in various chemistry experiments, including reactions involving metal oxides and the preparation of other compounds. Safety precautions should be observed when working with this substance.
Frequently Asked Questions (FAQs) about the WAEC Chemistry Practical Exam 2024/2025:
1. What are the specimens required for the Chemistry Practical exam in WAEC 2024/2025?
– The Chemistry Practical exam specimens for WAEC 2024/2025 consist of essential apparatus and materials that each candidate must possess. These include a 50 cm3 burette, a 20 cm3 or 25 cm3 pipette (with candidates at a given center using pipettes of the same volume), titration apparatus, and various reagents for qualitative analysis, all appropriately labeled. Additionally, candidates will receive labeled solutions of HCl, Na2CO3·10H2O, glucose, and zinc oxide powder. It is crucial for candidates to familiarize themselves with these specimens and adhere to the provided guidelines for a successful examination.
2. What is the purpose of the WAEC Chemistry Practical examination?
– The primary objective of the WAEC Chemistry Practical examination is to assess candidates’ practical skills and their ability to apply chemical principles in real laboratory scenarios.
3. What apparatus and materials should I bring to the examination?
– Candidates should bring a 50 cm3 burette, a pipette (either 20 cm3 or 25 cm3), and the standard apparatus and reagents required for titration and qualitative analysis, as specified in the instructions. It is essential that all equipment is clean and devoid of grease.
4. Can I use my own pipette during the examination?
– No, candidates at a particular examination center must use pipettes of the same specified volume, as indicated in the instructions. This measure ensures fairness in the examination process.
5. What are the labeled solutions of HCl and Na2CO3·10H2O used for?
– The labeled solutions of HCl and Na2CO3·10H2O are provided for specific experiments during the examination. Candidates are expected to use these solutions as per the instructions provided on the labels.
6. Is it necessary to have a mathematical table/calculator for the examination?
– Yes, it is imperative to have a mathematical table/calculator as it may be required for calculations during the practical examination.
7. How should I handle the provided solutions of HCl, Na2CO3·10H2O, glucose, and zinc oxide powder?
– Exercise caution and strictly follow the instructions when handling these substances. Use them only for the designated experiments, and refrain from tampering with the labeling or contents.
8. Can I bring my own reagents or apparatus for the examination?
– No, candidates are not allowed to bring their own reagents or apparatus. You must use only the specified equipment and materials provided by the examination officials.
9. What precautions should I take to prevent information leakage before the examination?
– Avoid discussing the examination content with others prior to the examination. Do not attempt to gain access to any information about the experiments in advance.
10. What is the purpose of using methyl orange as an indicator in the examination?
– Methyl orange serves as a common indicator in acid-base titrations, aiding in determining the endpoint of the reaction. It undergoes a color change at a specific pH, signifying the completion of the titration.
In conclusion
The WAEC Chemistry Practical examination for the year 2024/2025 demands thorough preparation and strict adherence to the provided instructions. Candidates should ensure they have the required apparatus and materials, while also exercising caution to prevent unauthorized access to information before the examination. Adhering to these guidelines will contribute to a fair and successful examination experience for all participants. Best of luck to all candidates in the upcoming WAEC Chemistry Practical examination!