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# labbbbb - Samuel Castrejon Period 1 Kinetics Lab DataMass...

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Samuel Castrejon Period 1 2/12/12 Kinetics Lab Data- Mass of Empty Beaker: 29.72 g Average Mass of 1 drop water: 0.180 g Volume of 1 drop: 0.00002 L Beaker with 5 drops water: 29.80g Beaker with 10 drops of water: 29.89g Beaker with 15 drops of water: 29.98g Table 1.1 Reaction Rates and Concentrations of Ions in Acidic Solution Time (sec) Initial Concentration (M) Trial 1 Trial 2 Trial 3 Trial 4 Avg Temp C Rxn Rate M/s [I - ] [BrO 3 - ] [H + ] Exp 1 140 145 154 160 150 22 9.3 x 10 -8 0.0017 0.0067 0.017 Exp 2 138 142 140 148 142 22 9.8 x 10 -8 0.0033 0.0067 0.017 Exp 3 90 110 105 96 100 22 1.4 x 10 -7 0.0005 0.0067 0.017 Exp 4 88 95 100 105 97 22 1.4 x 10 -7 0.0017 0.013 0.017 Exp 5 75 80 90 96 85 22 1.6 x 10 -7 0.0017 0.020 0.017 Exp 6 100 95 93 98 97 22 1.4 x 10 -7 0.0017 0.0067 0.033 Exp 7 30 32 36 35 33 22 4.2 x 10 -7 0.0017 0.0067 0.050 Exp 8 50 44 46 50 48 22 3.0 x 10 -7 0.0025 0.010 0.025 Rate calculation 0.00002 L H 2 O x 0.0010 mol Na 2 S 2 O 3 /L = 5.0 x 10 -8 mol S 2 O 3 - ions 5.0 x 10 -8 mol S 2 O 3 - x 1 Mol I 2 x 1 mol BrO 3 - = 2 mol S 2 O 3 2 3 mol I 2 = 8.3 x 10 -9 mol BrO 3 - reacted -∆[BrO 3 - ] = 8.3 x 10 -9 mol BrO 3 - Volumes of 12 drops = 1.4 x 10 -5 M BrO 3 Order Calculation Theoretical: [I - ] = 1 st order [BrO 3 - ] = 1 st order [H + ] = 2 nd order EXPERIMENTAL [I - ]: Exp 1-->Exp 2: 0.0017 to 0.0033; 9.3 x 10 -8 to 9.8 x 10

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labbbbb - Samuel Castrejon Period 1 Kinetics Lab DataMass...

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