2CLabManual201303

The absorbance values should have a value between 0

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Unformatted text preview: sample of entry #2; etc... This means that your absorbance values will be in decreasing order. Please check for this carefully as it will affect the slope calculations. First, let's collect the data needed for the determination of the GG effective extinction coefficient. The absorbance values should have a value between 0 and 1. Please enter the 4 values of the GG absorbance measurement in corresponding order of solution concentration (high concentration to low concentration; values of absorbance will be running in the same sense, high absorbance to low absorbance and expressed to three significant digits). Plot the values of GG Absorbance versus Concentration on a spreadsheet or a programmable calculator, and carefully determine the slope of the best straight line fit through the data. The slope values for GG, GR, RG, and RR must be accurately determined because they will enable you to solve for the unknown concentration of your mixture of the two cobalt complexes. Enter the value of the slope of A vs. C. This is your effective extinction coefficient for GG. ****** Now let's collect the data needed for the determination of the GR effective extinction coefficient. The absorbance values should have a value between 0 and 1. Please enter th...
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This note was uploaded on 04/09/2013 for the course CHE CHE 2C taught by Professor Nasiri during the Spring '07 term at UC Davis.

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