The Iodine Clock Reaction
OCR PAG 10. 1 rates iodine clock
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The Iodine Clock Reaction : HazCard :
25 cc of 0.1 M potassium iodide solution (If KI Is not Clear add a small cristal of Sodium thiosulfate and mix )
25 cc of 0.5 M Sulfuric (VI) acid
25 cc of 0.1 M Hydrogen peroxide solution
Distilled water
10 cc of 0.01 M sodium thiosulfate solution
10 cc of 0.2 % starch solution
10cc measuring cylnder or burettes containing the above solutions
7 X test tubes
Stop watch
Test tubes Potassium Iodide 500ml Hydrogen peroxide 6ml to 500ml DW Sodium Thiosulfate 0.62ml to 250DW
100Vol= 30% = 0.3 M 12mls of 100Vol to 1L = 0.1 M (100Vol=8.3M =30%)
Stock bottle of iodine Sulfuric acid 0.5M Distilled water
Starch stop-clock
EP Sept 2026 Large conical flask for waste white tiles glass pens
Chemistry PAG 10.1 Teacher v2.2.docxChemistry PAG 10.1 Learner v2.2.docxGoogle Sites
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