Rate law I DID IT

# Rate law I DID IT - Determination of a Rate Law Elisha...

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Determination of a Rate Law Elisha Steiner CHM152 26277 October 7 th , 2015. Dr Weide

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Abstract The purpose of the experiment was to determine the rate, order, and mechanisms within the reaction between Iodine, Thiosulfate, and hydrogen peroxide within an acidic solution. My lab partner was Connor Mcbaron. After analyzing the data, it was determined that the reaction was a first order reaction in respect to [Iodine], and a 2 nd order reaction overall. The activation energy required the reaction was calculated to be 43.4 KJ/mol. The experiment was conducted using the recommended amounts of each solution as to simplify calculations. Introduction The speed a reaction occurs at is limited by the mechanisms involved within the reaction. It is only as fast as it’s slowest component. We first observed the reaction between H 2 O 2 + 2I - + 2H + → I 2 +2H 2 O. The I 2 produced then went into a second reaction 2S 2 O 3 -2 + I 2 → S 4 O 6 -2 + 2I - . The I - ions then reacted just like in the first equation. The cycle repeated itself until the S
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