CHEM
Lab 2-1

# Place your plot of lncv vs time here cover this

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Place your plot of ln[CV+] vs time here (cover this instruction box so that your graph is an appropriate size). Properly label your graph (labels for axes, including units, and a title). Include a trendline and its equation and R value on your graph. This is done by right-clicking on one of the data points on your graph and choosing "Add Trendline" from the drop down menu. The first tab asks what type of trendline you wish to use, and the Options tab allows you to include the trendline equation and R value. Place your plot of [CV+] vs time here (cover this instruction box so that your graph is an appropriate size). Properly label your graph (labels for axes, including units, and a title). Include a trendline and its equation and R value on your graph. This is done by right-clicking on one of the data points on your graph and choosing "Add Trendline" from the drop down menu. The first tab asks what type of trendline you wish to use, and the Options tab allows you to include the trendline equation and R value. HINT BOX Recall: rate = k[CV ] [OH ] = k'[CV ] , where k'=k[OH ] therefore, ln(k') = ln(k) + ln([OH ] ) and since ln([OH ] ) = o*ln[OH ] the following equation will yield a straight line: ln(k') = o*ln([OH ]) + ln(k) Comparing to y = mx+b y = ln(k'), x = ln([OH ]), b = ln(k) The slope of the line gives the order of the rxn m = o and the rate constant is found by taking the anti-log of the y- intercept. Laboratory Waste Evaluation (1 pt) Laboratory waste is considered anything generated during an experiment that is disposed of down the sewer drain, thrown in the garbage, collected in a container for disposal by the UW Environmental Health & Safety department, or released into the environment. Based on the written lab procedure and your actions during the lab, list the identity and approximate amount (mass or volume) of waste that you generated while performing this experiment. 9 ml 0.0005 M Na2S2O3 9 ml 0.010 M KI 9 ml 0.04 M KBrO3 9 ml 0.100 M HCl 9 ml H2O 30 drops of starch ice and water for ice bath 6 ml 1e-4 M CV+ water for dilution 10 ml 0.1 M NaOH -3.1 -3.0 -2.9 -2.8 -2.7 -2.6 -2.5 -2.4 -2.3 -7.1 -7.0 -6.9 -6.8 -6.7 -6.6 -6.5 -6.4 f(x) = 0.686172619x - 4.9976423095 R² = 0.8576646304 log(rate) vs log(I-) log(I-) log(rate) -2.5 -2.4 -2.3 -2.2 -2.1 -2.0 -1.9 -1.8 -1.7 -7.1 -7.0 -6.9 -6.8 -6.7 -6.6 -6.5 -6.4 f(x) = 0.7049883333x - 5.3363701667 R² = 0.9370104932 log(rate) vs log(BrO3-) log(BrO3-) log(rat e) -2.1 -2.0 -1.9 -1.8 -1.7 -1.6 -1.5 -1.4 -1.3 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 f(x) = 2.0752728571x - 3.1349842857 R² = 0.9832172413 log(rate) vs log(H+) log(H+) log(rat e) 0 20 40 60 80 100 120 140 160 0.00E+00 1.00E-06 2.00E-06 3.00E-06 4.00E-06 5.00E-06 f(x) = -2.71484060767186E-008x + 4.00611325864033E-006 R² = 0.9680532318 [CV+] vs time(sec) Time (seconds) [CV+] 0 20 40 60 80 100 120 140 160 -14.500 -14.000 -13.500 -13.000 -12.500 -12.000 -11.500 -11.000 f(x) = -0.0140069928x - 12.2470851196 R² = 0.991024651 ln[CV+] vs Time(sec) Time (seconds) ln[CV+ ] 0 20 40 60 80 100 120 140 160 0.000E+00 5.000E+05 1.000E+06 1.500E+06 2.000E+06 f(x) = 8957.1964035564x + 33439.2851578811 R² = 0.868255024 1/[CV+] vs Time(sec) Time (seconds) 1/[CV+ ]
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