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Unformatted text preview: Ryan O’Hearn Chemical Principles I I Lab - 1011.206.43 Lab #7: Spectroscopic Determination of the Equilibrium Constant for [Fe 3+ (aq) +SCN- (aq) FeSCN 2+ (aq) ] 04:49:13 Pu rpose Use visible spectroscopy to find the room temperature equilibrium constant for a reaction in an acidic aqueous solution. The reaction we will be observing is between the iron (III) ion (Fe 3+ ) and the thiocyanate ion (SCN- ) which forms ferric thiocyanate ion (FeSCN 2+ ). The equilibrium constant is when the reactants form products at the same rate that products are being broken back down into reactants again. Because of this, the reaction never actually stops. Procedure See “Chemistry 206 Lab: Chemical Principles I I Laboratory,” “Lab #7: of the Equilibrium Constant for [Fe 3+ (aq) +SCN- (aq) FeSCN 2+ (aq) ].” Data Tables, Graphs See Attached Excel Spreadsheet and Graph Sample Calculations Molarity of SCN- Solution (Question #1): M 1 x V 1 = M 2 x V 2 = M1 x V1V2 M 2 (0.002M x 0.010L) ÷ 0.09L = x 0....
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This lab report was uploaded on 04/17/2008 for the course CHEMISTRY Gen and An taught by Professor Thomaskim during the Spring '08 term at RIT.
- Spring '08