CHEMISTRY PAPER 3 (CONFIDENTIAL) - FORM 4 END TERM 1 EXAMS 2020

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In addition of the apparatus and fittings found in a chemistry laboratory, each candidate will require the following.

  1. About 100cm3 of 2m Hydrochloric acid labeled solution A.
  2. Accurately weighed 4g anhydrous sodium carbonated labeled solid X.
  3. About 80cm3 of 1M sodium hydroxide solution labeled solution B.
  4. About 120cm3 of 7 M sulphuric (vi) acid solution labeled solution C.
  5. 250 ml volumetric flask.
  6. 100 ml measuring cylinder
  7. Distilled water
  8. 250 ml plastic beaker (empty)
  9. 0 – 1100C
  10. One burette (0 – 50ml)
  11. One 0 ml pipette.
  12. Two conical flasks (250 ml)
  13. Methyl orange indicator
  14. Retort stand
  15. Pipette filler
  16. A white tile
  17. 6 dry test tubes
  18. 1 boiling tube
  19. One filter funnel
  20. 1 label
  21. Metallic spatula
  22. 5 g of solid K
  23. 1 g of solid P
  24. About 5g sodium hydrogen carbonate
  25. Glass rod

Access to

  1. Means of heating
  2. 2M NaOH with a dropper
  3. 2M Ammonia solution with a dropper
  4. 2M nitric acid with a dropper
  5. 09M Barium nitrate solution
  6. Universal indicator with a dropper
  7. Standard PH chart

NOTE:

  1. Solid K is a mixture of ZnSO4 and (NH4)2 SO4 in the ratio 1:1.
  2. Solid P is oxalic acid.
  3. Solution A is 2M Hydrochloric acid prepared by dissolving 17.2cm3 of concentrated hydrochloric acid in 1 litre.
  4. Solution B is 1M sodium hydroxide prepared by dissolving 40g in 1
  5. Solution C is 7M sulphuric (vi) acid prepared by dissolving 38.5 litres of the acid in a litre of solution.

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