Chemical kinetics Determination of the Rate Order, Rate Constant (k), and half-l

Question

Chemical kinetics

Determination of the Rate Order, Rate Constant (k), and half-life of Ba Data Analysis Determination of the Rate Order, Rate Constant (k), and half-life of 137mBa Create three different, graphs in Excel based, on the information gathered in the pre-lab questions to determine the order of the reaction. Before graphing, check with your TA to ensure you have the correct integrated rate laws for the three rate orders. Be sure to very clearly label the axis on each graph, and include in the title which order is being tested (zero, first, or second order). Add a linear trendline (this one MUST be linear) and an R2 value to each graph. Which graph (zero, first, or second order) produced the data that fit best to the linear trendline? Therefore, what is the order of this reaction? Once the order of the reaction has been determined, use the graph to determine the rate constant (k). Be sure to show all calculations and provide correct units based on the order of the reaction. Once the rate constant has been determined, use it to calculate the half-life of 137mBa. Be sure to show all calculations. Calculate a percent error based on the theoretical y1/2 of 137mBa (2.55 min) and the experimental value obtained.

Explanation / Answer

it is a1st order

half life(t1/2) = 14.2 min

K = 0.693/t1/2

   = 0.693/14.2

    =0.0488 min-1

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