lab8 - 04/16/2009 Section: Date of experiment performed:...

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10/06/2009 1 Section: I02 Date of experiment performed: 03/09/09 Date Report prepared: 03/22/09 Name: Fletcher Dostie Partner's Name: Andrew Pak Experiment 8 : 90 pts total Absorbances of ZnTPP bound with Pyridines 3-Chloro py Pyridine, py 3methyl py 4-amino py 0 0.564 0.621 0.722 0.659 0.606 0.662 0.646 0.595 10 0.536 0.485 0.554 0.651 0.560 0.514 0.631 0.561 20 0.510 0.439 0.499 0.652 0.533 0.510 0.600 0.501 30 0.492 0.396 0.474 0.631 0.504 0.486 0.585 0.468 40 0.470 0.405 0.461 0.628 0.478 0.465 0.570 0.450 2.58 50 0.456 0.374 0.456 0.623 0.457 0.446 0.548 0.405 3.35 60 0.449 0.362 0.473 0.612 0.439 0.431 0.536 0.378 4.52 70 0.431 0.352 0.473 0.603 0.426 0.418 0.497 0.384 4.39 80 0.426 0.361 0.450 0.598 0.411 0.407 0.502 0.371 3.35 90 0.415 0.330 0.436 0.580 0.402 0.399 0.493 0.355 N/A 100 0.409 0.314 0.415 0.582 0.397 0.392 0.469 0.341 3.71 4.52 3.35 4.35 N/A pKa 2.58 3.35 3.71 N/A 4.52 4.35 N/A 4.39 2.63E-03 4.49E-04 1.95E-04 N/A 3.05E-05 4.48E-05 N/A 4.05E-05 ligand conc. 0.0526 ligand [ZnTPP] 5x10-5 Ao 0.564 3-Chloro py vol. added [base] Aobs 10 2.62E-04 0.536 107.0 20 5.21E-04 0.510 103.7 30 7.77E-04 0.492 92.6 40 1.03E-03 0.470 91.1 50 1.28E-03 0.456 84.2 60 1.53E-03 0.449 75.1 70 1.78E-03 0.431 74.8 80 2.02E-03 0.426 68.2 90 2.27E-03 0.415 65.8 100 2.50E-03 0.409 61.9 slope 1/slope 2.628E-03 380.53 (Section J2 Data) Investigation of the Interaction of a Lewis Base with a Lewis Acid Data/Results: ( 60 pts) Base added, ul 2 methyl py 4 methyl py 3,5-dimethyl py 2,4-dimethyl py K (2 sig fig.) (Ao- Aobs) / [base] 50.0 60.0 70.0 80.0 90.0 100.0 110.0 0.000 0.100 0.200 0.300 0.400 0.600 f(x) = 0.00263x + 0.24277 R² = 0.96290
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This note was uploaded on 04/16/2009 for the course CHEM 1312 taught by Professor Bottomley during the Spring '07 term at Georgia Institute of Technology.

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lab8 - 04/16/2009 Section: Date of experiment performed:...

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