experiment #10

experiment #10 - Experiment #10 Chemical Equilibrium:...

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Experiment #10 Chemical Equilibrium: Determination of an Equilibrium Constant Kevin Falting Chemistry 117 – 529 November 18 th , 2009 Lab Partner: Zach Thomas
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Summary: In experiment number ten, Chemical Equilibrium: Determination of an Equilibrium Constant , we attempted to evaluate the equilibrium constant for the reaction of Iron(III) plus Thiocyanate yielding Thiocyanoiron(III). When Iron(III) and Thiocyanate are combined, they do not react to completion. Instead, equilibrium is established between these two ions and the Thiocyanoiron(III) ion, with all three ions present in the final solution. In order to calculate the equilibrium constant for the reaction, it is necessary to know the concentrations of all ions at equilibrium. We prepared four solutions containing different concentrations of these three ions. We then experimentally determined the concentrations and substituted these values into a equilibrium constant expression to see if the equilibrium constant is indeed constant. The experimental results do not seem to be constant, but this can be attributed to human
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This note was uploaded on 02/23/2010 for the course CHEM 107 taught by Professor Generalchemforeng during the Fall '07 term at Texas A&M.

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experiment #10 - Experiment #10 Chemical Equilibrium:...

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