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For Part A of the Equilibrium experiment, you will be preparing several standard solutions for the Beer's Law plot. Using the information given in the Worksheet for Equilibrium Lab, answer the following questions. (a) What is the initial Fe³+ concentration of all of the solutions? (b) What is the initial SCN¹- concentrations of Solutions #1A - #5A? Solution #1A Solution #2A Solution #3A Solution #4A Solution #SA M M M M M M M (c) What is the final concentration of FeSCN2+ in Solution #1A? Note: You may wish to note these results on your lab worksheet, as they will be used in prepal g your calibration curve.
Solution # Blank 1 2 3 5 General Chemistry 2 Labs using Argument-Driven Inquiry Worksheet Inv. 5-1 Volume of 0.100 M Fe³+ (mL) 1.00 1.00 1.00 1.00 1.00 1.00 Beer's Law Calibration Curve Volume of 5.00E M SCN (mL) 0.00 1.00 1.50 2.00 2.50 3.00 Volume of Total Water Volume (mL) (mL) 5.00 4.00 3.50 3.00 2.50 2.00 6.00 6.00 6.00 6.00 6,00 6.00 [FeSCN³+] Absorbance at 470 nm The FeSCN+ concentration at equilibrium is calculated for each solution by assuming all SCN- reacts, which is valid if the Fe+ is in large excess. Show the calculation of SCN from dilution.