Purpose
To illustrate a time delayed reaction which leads to the exploration of several factors which effect reaction rate.

Materials

• Soluble starch
• Potassium iodate, KIO3
• Sodium hydrogen sulfite (sodium bisulfite), NaHSO3
• Sulfuric acid, H2SO4 (1.0 M)
• 2 ea. 1L Erlenmeyer flask
• 2 ea. 400 mL beaker
• 1 ea. 25 mL and 100 mL graduated cylinder
• Stirring rod
• electronic balance
• optional - timer

Continue reading ‘Iodine Clock Reaction ScholAR Demonstration’

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