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REPORT SHEET | EXPERIMENT Colorimetric Determination of an Equilibrium Constant in Aqueous Solution | 22 A. Preparation of the Calibration Curve Concentration of Fe(NO3)3 in 0.10 M HNO3 solution 0.002 M Concentration of NaSCN in 0.10 M HNO3 solution 0.002 M Flask Number 1 2 3 4 5 6 Volume of NaSCN, mL 0 1.00 mL 2.00 mL 3.00 mL 4.00 mL 5.00 mL Solution Initial [SCN-], M 0 0.0004 M 0.0008 M 0.0012 M 0.0016 M 0.002 M Equil. [FeNCS2+], M Percent T 100 78.5 63.0 49.7 42.0 35.2 Absorbance 0 0.105 0.200 0.304 0.377 0.454

          REPORT SHEET | EXPERIMENT
Colorimetric Determination of an Equilibrium Constant in Aqueous Solution | 22
A. Preparation of the Calibration Curve
Concentration of Fe(NO3)3 in 0.10 M HNO3 solution 0.002 M
Concentration of NaSCN in 0.10 M HNO3 solution 0.002 M
Flask Number
1 2 3 4 5 6
Volume of NaSCN, mL 0 1.00 mL 2.00 mL 3.00 mL 4.00 mL 5.00 mL
Solution
Initial [SCN-], M 0 0.0004 M 0.0008 M 0.0012 M 0.0016 M 0.002 M
Equil. [FeNCS2+], M
Percent T 100 78.5 63.0 49.7 42.0 35.2
Absorbance 0 0.105 0.200 0.304 0.377 0.454

REPORT SHEET | EXPERIMENT
Colorimetric Determination of an Equilibrium Constant in Aqueous Solution | 22
A. Preparation of the Calibration Curve
Concentration of Fe(NO3)3 in 0.10 M HNO3 solution 0.002 M
Concentration of NaSCN in 0.10 M HNO3 solution 0.002 M
Flask Number
1 2 3 4 5 6
Volume of NaSCN, mL 0 1.00 mL 2.00 mL 3.00 mL 4.00 mL 5.00 mL
Solution
Initial [SCN-], M 0 0.0004 M 0.0008 M 0.0012 M 0.0016 M 0.002 M
Equil. [FeNCS2+], M
Percent T 100 78.5 63.0 49.7 42.0 35.2
Absorbance 0 0.105 0.200 0.304 0.377 0.454

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