Lab 10 Chemical Equilibrium

Lab 10 Chemical Equilibrium - 19:23 Chemical Equilibrium...

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19:23 Chemical Equilibrium: Determination of an Equilibrium Constant Experiment #10 William Brown Section #509 Lab Partner: Kevin Deal Summary : In this experiment, then main purpose was to evaluate the equilibrium  constant for the reaction of iron(III) and thiocyanate, forming thiocyanoiron. While  determining the equilibrium concentrations, we observed LeChatlier’s principle, which  can be used to predict the effect of a change in conditions during a chemical reaction. In  summary, we prepared four small beakers with varying amounts of Fe(NO 3 ) 3 , KSCN,  and H 2 O.  All of the solutions added up to 10 milliliters. Using a calorimeter and  cuvettes, we measured the absorbance levels of the different solutions. Using our data,  we were able to calculate equilibrium constants. Our results indicated that the more  KSCN and the less H 2 O, the lower the equilibrium constant. This means that the  equilibrium is closer to the product side when there is less KSCN in the solution.    Results : In order to calculate an approximate equilibrium constant, we made five  different solutions, with varying amounts of Fe(NO
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Lab 10 Chemical Equilibrium - 19:23 Chemical Equilibrium...

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