2) Consider the equilibrium reaction: Fe** (ag) + SCN-' (ag) < -- > FeSCN*2 (ag) A UV-VIS spectroscopy experiment was conducted in order to determine the equilibrium constant for this reaction. At 589 nm, the extinction coefficient (€) was determined to be 2071 after collecting data for a series of standard solutions of the product, FeSCN+2. In a specific experiment, 10.00 mL of 0.00500 M Fe(NO3)3 and 2.00 mL of 0.00500 M NASCN were mixed and diluted to 25.00 mL in a volumetric flask. The measured absorbance is 0.484. Calculate the value of the equilibrium constant, Kc, using these experimental data. Hint: Beer's Law is needed. Path length is = 1.

2) Consider the equilibrium reaction: Fe** (ag) + SCN-' (ag) < -- > FeSCN*2 (ag) A UV-VIS spectroscopy experiment was conducted in order to determine the equilibrium constant for this reaction. At 589 nm, the extinction coefficient (€) was determined to be 2071 after collecting data for a series of standard solutions of the product, FeSCN+2. In a specific experiment, 10.00 mL of 0.00500 M Fe(NO3)3 and 2.00 mL of 0.00500 M NASCN were mixed and diluted to 25.00 mL in a volumetric flask. The measured absorbance is 0.484. Calculate the value of the equilibrium constant, Kc, using these experimental data. Hint: Beer's Law is needed. Path length is = 1.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter16: Solubility And Precipitation Equilibria

Section: Chapter Questions

Problem 37P

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