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lab 15 calculation of an equilibrium constant

# lab 15 calculation of an equilibrium constant - Date...

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Unformatted text preview: Date Performed: 02/18/08 Name: Dustin Rinehart Date Submitted: 02/24/08 Partner: Sarah Votsi Instructor: Furong Sun Calculation of an Equilibrium Constant Objective: Use the MeasureNet spectrometer to determine the equilibrium constant of a chemical reaction. This experiment is a study of the chemical equation. Experimental Data: Maximum of visible light is obtained at about 447nm A=2bC , M Fe3+ (aq) SCN (aq) ͍ Fe(SCN (aq) initial 0.08 0.00004 change- 0.00004- 0.00004 0.00004 equilibrium 0.07996 0.00004 standard solution .2 M Fe(NO3)3 .001 M NaSCN .1 M HNO3 blank 10 ml 0 ml 15 ml 1 10 ml 1 ml 14 ml 2 10 ml 2 ml 13 ml 3 10 ml 3 ml 12 ml 4 10 ml 4 ml 11 ml , M Fe3+ (aq) SCN (aq) ͍ Fe(SCN (aq) initial 0.001 0.0002 change-x -x +x equilibrium .001-x .0002-x +x standard solution .2 M Fe(NO3)3 .001 M NaSCN .1 M HNO3 5 10 ml 2 ml 14 ml 6 10 ml 4 ml 13 ml 7 10 ml 6 ml 12 ml 8 10 ml 8 ml 11 ml Sample Calculations: Part A> Initial molarity of the SCN- M1V1=M2V2 (.001M)(1 mL) = 4e^-5 M [Fe(SCN)2+] (25mL) Part B> [Fe3+] initial molarity...
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lab 15 calculation of an equilibrium constant - Date...

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