chem lab 17 - Sheldon Pope & Brandon Pezzuto Chem 404...

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Chem 404 section 7 3-27-08 Equilibrium Constant Lab 1. See Appendix A; graph 1 for the calibration data graph. 2. See Appendix A for Data Table 1. 3. See Appendix A; graph 2 for the graph of the absorbance. The concentrations of Samples 6-10 are also listed below the graph. 4. See graph 2 under Appendix A. 5. Tube # 6: A = Kc (Beer’s Law) C = Absorbance/k C = .270/7609 C = 3.55 E-5 or .000036 6. Table 2 Test tube No. Starting [Fe 3+ ] Starting [SCN - ] Equilibrium [FeSCN 2+ ] Equilibrium [Fe 3+ ] Equilibrium [SCN - ] K c 6 .0005 M .00075 M .0029 M .0024 M .0022 M 549.2 7 .0005 M .001 M .0038 M .0033 M .0028 M 411.3 8 .00075 M .0005 M .0028 M .0021 M .0023 M 579.7 9 .00075 M .00075 M .0043 M .0034 M .0034 M 372.0 10 .001 M .0005 M .0038 M .0028 M .0033 M 411.3 7. See Apendix A number 7 for calculations. 8. See table 2 for the remaining data. 9. The mean K c value was 464.7. 10. The standard deviation is .1676. See Appendix A number 10 for calculation.
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This lab report was uploaded on 04/18/2008 for the course CHEM 404 taught by Professor Bauer during the Spring '08 term at New Hampshire.

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chem lab 17 - Sheldon Pope & Brandon Pezzuto Chem 404...

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