Chemical Equilibrium Lab Write - Chemical Equilibrium Lab Write-Up Chem 112 A Research Question(s a How does the Kc respond to the different

Chemical Equilibrium Lab Write - Chemical Equilibrium Lab...

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Chemical Equilibrium Lab Write-Up Chem 112 A. Research Question(s) a. How does the K c respond to the different concentrations of the different substances?
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b. How does heat affect the reaction? c. What changes appear after adding or removing reactants? B. Observations and Results Table 1. Equilibrium Constant Determination. Test tube [Fe 3+ ] i [SCN - ] i [Fe 3+ ] eq [SCN - ] eq [FeSCN 2+ ] eq K c 1 0.001 4*10 -4 9.38*10 -4 3.38*10 -4 6.25*10 -5 2.25*10 -5 2 0.001 6*10 -4 9.50*10 -4 5.50*10 -4 5.02*10 -5 2.91*10 -5 3 0.001 8*10 -4 9.50*10 -4 7.49*10 -5 5.11*10 -5 4.03*10 -6 4 0.001 1*10 -3 9.41*10 -4 9.41*10 -4 5.87*10 -5 5.87*10 -5 Table 2. Le Ch â telier’s Principle Observations. Effect A 470 (indicate ↑ or ↓) Change in [FeSCN 2+ ] (indicate ↑ or ↓) Adding heat energy Removing heat energy Adding Fe(NO 3 ) 3 Adding EDTA C. Claim a. The K c responds to the change in concentrations of each of the compounds when in a mixture. b. The addition of heat in this reaction lowered the absorbance and lightened the color of
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