P2 S2 Pre-Lab Worksheet

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Chemical Thinking P2S2 Pre-Lab Worksheet TUE v3.1 | Project 2 Session 2 Pre-Lab Worksheet TUESDAY LABS GRADE ____ /10 p Question 1 Dilution Calculations (6 p) You wish to construct an absorbance versus concentration (A vs. C) plot for a FD&C food dye. Suppose you have a stock solution that is 5.44 x 10 -6 M in this dye. Complete the following table (fill in the blanks) showing how the different calculations were performed ( Remember to properly present all calculations following the format introduced in the SD1 In-Lab Worksheet. ) Stock Concentration Volume of Stock (mL) Volume of Diluent (mL) Diluted Sample Concentration (M) 5.44 x 10 -6 M 5.00 0.00 5.44 x 10 -6 3.67 1.33 3.99 x 10 -6 2.50 2.50 2.72 x 10 -6 1.33 3.67 0.33 4.67 3.59 x 10 -7 Question 2 Determining the Molar Absorptivity (4 p) You wish to determine the molar absorptivity ε for another food dye. Using only the data
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