Iodine Clock

Chem-E-Car Reaction Mechanism

By Joshua Agarwal and Jayg Dimayacyac in chemical

January 27, 2017

Introduction The Iodine Clock reaction is the official stopping mechanism for the 2016-2017 Junior Chem-E-Car design team. The reaction involves a color change with an Iodine indicator to signal the stopping mechanism, via a light dependent resistor. Through calibration, the reaction time can be determined by the ratio of Potassium Iodide and Sodium Thiosulfate. The correlation between time and ratio is linear; therefore, the Iodine Clock is a simple and effective stopping mechanism for the motor.

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