Lab 5 Equilibrium

Lab 5 Equilibrium - Chem 125 Dr. Nguyen Name: Roman Ferro...

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Chem 125 Dr. Nguyen Name: Roman Ferro Computer #: 18 Partner s Taylor Brady and Anthony Atchley ( Total = 4 pts of pre-lab + 21 pts of report = 25 pts ) Determination of an Equilibrium Constant Absorbance of Standard Solutions (0.5 pt) Concentration of (FeSCN) 2+ in your stock solution: .00015 M (0.5 pt) In the space below, show your calculation for the above concentration of (FeSCN) 2+ . (2 pts) In the table below, record the results of your observations for each of the standard solutions you made. Title this table (in the space below) and use units where appropriate. Absorbance of FeSCN Tube No. [(FeSCN) 2+ ] Absorbance 1 .00003 M .085 2 .00006 M .145 3 .00009 M .300 4 .00012 M .405 5 .00015 M .496 (1 pt) In the space below, show how you calculated the [(FeSCN) 2+ ] for standard tube #2:
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Insert below the Excel graph you generated showing the linear relationship between concentration and absorbance of the [FeSCN 2+ ] standard solutions. (2 pts) The Fe 3+ + SCN - (FeSCN) 2+ Equilibrium System (2 pts) In the table below, record the results of your initial concentration calculations. Title this table (in the space below) and use units where appropriate. Initial Molarities
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This note was uploaded on 11/14/2011 for the course CHEM 125 taught by Professor Retsek during the Fall '08 term at Cal Poly.

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Lab 5 Equilibrium - Chem 125 Dr. Nguyen Name: Roman Ferro...

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