1. Experiment 29
Use the experiment in the supplemental packet, not the lab manual, for this experiment
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2. In Lab
Work in groups of 4
Do one trial run with everyone participating to observe the reaction and the data acquisition
(yellow to colorless, swirl constantly, be consistent)
Divide the various trials among all four lab partners; exchange data
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3. Table 1 (The only table with data)
Volumes are given in the lab procedure; use a graduated cylinder to measure solutions
The time for a completed trial should be written in units of seconds (whole numbers)
Timers are provided in lab, or you can use your own timer
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4. Table 2
Concentrations need to be calculated because the concentrated stock solutions are diluted when the reactants are mixed together
Use the dilution equation (chapter 4 text)
(Mc) (Vc) = (Md) (Vd)
The rate of reaction is:
rxn rate = (-)(1/1)(Δ[I2]) / (Δt)
rxn rate = ([I2]) / (average t) (This is the simplified version.)
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5. For this experiment….
Determine the exponents in the rate law equation:
Rxn rate = k[acetone]m[H+]p[I2]n
Determine the value of k, the rate constant, for each trial and the average k value
Calculate the reaction rate by using the completed equation and trial 5 data:
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