Beer law - Beer's Law By: Robert Pelini Date of Lab:...

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Beer’s Law By: Robert Pelini Date of Lab: 4/10/08 Date Submitted: 4/17/08 Partners: Paul K,
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Wavelength = 770 nm Sample # Approx mL of stock in 100 mL flask Initial Buret (mL) Final Buret (mL) Actual mL used Calc. Conc. (M) %T Absorbance 1 1 0 1.01 1.01 .0101 79.3 .101 2 2 1.01 3.01 2.0 .0221 60.2 .254 3 3 3.01 6.01 3.0 .0297 44.8 .296 4 4 3.01 10.0 3.99 .0393 35.1 .447 5 5 10.0 15.0 5.0 .0517 25.8 .538 6 6 15.0 21.0 6.0 .0600 19.0 .747 7 7 21.0 28.0 7.00 .0700 14.2 .790 8 8 28.0 35.01 8.01 .0798 14.6 .907 9 9 35.01 44.0 8.99 .0918 8.5 .983 10 12 44.0 56.0 12.0 .1170 3.7 1.32 11 15 56.0 71.0 15.0 .1510 1.7 1.72 12 18 71.0 89.0 18.0 .1810 0.8 2.00 13 20 89.0 109.0 20.00 .2000 0.3 2.05 14 x x x x .3000 0.0 3.00 15 x x x x .5000 0.0 3.00 16 x x x x .7500 0.0 3.00 Calculations: M1V1= M2V2 A = -log(%T/100) 1 x 1.01/ 100 = .0101 M -log (79.3/100) = .101 1 x 2.01/ 100 = .0201 M -log (55.7/100) = .254 1 x 2.97/ 100 = .0297 M -log (50.6/100) = .296 1 x 3.93/ 100 = .0393 M -log (35.7/100) = .447
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This note was uploaded on 04/17/2008 for the course CHEM 110 taught by Professor Gray during the Spring '08 term at Hartford.

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Beer law - Beer's Law By: Robert Pelini Date of Lab:...

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