Chem+102+Quiz+6+2010

Chem+102+Quiz+6+2010 - Answer the following question for a...

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Quiz #6 Name Lab Section: Show all your work and provide all calculated answers with the correct number of sig. fig. 1. For Part A when you made the standard curve, explain how you determined the concentration of the Fe(SCN) 2+ . (2 pts) 2. Determine what the equilibrium concentration of Fe(SCN) 2+ for the following data. (4 pt) [Fe 3+ ] init 5.00 × 10 -4 M 5.00 × 10 -4 M [SCN - ] init 5.00 × 10 -4 M 4.50 × 10 -4 M Absorbance .150 .185 [Fe(SCN) 2+ ] eq y = 7.8085x + 0.0072 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.000 0.010 0.020 0.030 0.040 0.050 Absorbance(AU) [Fe(SCN) 2+ ] (mM)
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Show all your work and provide all calculated answers with the correct number of sig. fig.
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Unformatted text preview: Answer the following question for a hypothetical reaction, 2A + B ! C 3. What is the initial concentration of A, B, C when 20 mL of 0.20 M A is mixed with 20 mL of 0.30 M B and brought to a final volume of 100 mL? (3 pt) 4. Set up an ICE table for the reaction. (5 pts) 5. If the equilibrium concentration of B is 0.05 M, what are the equilibrium concentrations of A and C? (4 pts) 6. What is the equilibrium constant for this reaction? (2 pts)...
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Chem+102+Quiz+6+2010 - Answer the following question for a...

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