ucsb - chem 1a - lab 6 discussion

ucsb - chem 1a - lab 6 discussion - after mixing new...

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Lab 6: Determination of an Equilibrium Constant (Using a Spectrophotometer) – Discussion In this lab, a spectrophotometer was used to determine the ionic concentration in solution. The equilibrium constant of a reaction was also calculated: Fe 3+ + SCN - <--> Fe(SCN) 2+ Procedure for the first part of the lab consisted of measuring absorption – which was really just pressing some buttons and looking at a graph - of the solutions supplied. Then, concentration for Fe(SCN) was calculated with the equilibrium constant expression. Part two,
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Unformatted text preview: after mixing new solutions, called for determining equilibrium constant from the calibration curve of the spectrophotometer. Errors made were mostly insignificant visual inaccuracies, along with math mistakes in calculating equilibrium constants. Data: graph Solutions for the Calibration Curve y = 621.42x - .0132-0.05 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.00005 0.0001 0.00015 0.0002 0.00025 Series1 Linear (Series1)...
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This note was uploaded on 05/19/2008 for the course CHEM 1AL taught by Professor Hooker during the Fall '07 term at UCSB.

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