Operating Wavelength : 462.8 nm Preparation of Standard Calibration Curve of [FeSCN]2+ Sample Number Absorbance Final Concentration of [FeSCN]2+(M) A 0.058 4.0E-5 B 0.174 8.0E-5 C 0.455 1.2E-4 D 0.740 1.6E-4 E 0.833 2.0E-4 Determination of [FeSCN]2+ in Equilibrium Mixtures Sample Number Absorbance 1 0.190 2 0.272 3 0.388 4 0.441 Determination of [FeSCN]2+ in equilibrium mixtures For Sample #1: the initial concentration of Fe3+ 0.0010 M the equilibrium concentration of Fe3+. 9.54×10-4 M the initial concentration of HSCN. 4.00×10-4 M the equilibrium concentration of HSCN. 3.54×10-4 M Calculate Keq for sample 1. ?
Operating Wavelength : 462.8 nm Preparation of Standard Calibration Curve of [FeSCN]2+ Sample Number Absorbance Final Concentration of [FeSCN]2+(M) A 0.058 4.0E-5 B 0.174 8.0E-5 C 0.455 1.2E-4 D 0.740 1.6E-4 E 0.833 2.0E-4 Determination of [FeSCN]2+ in Equilibrium Mixtures Sample Number Absorbance 1 0.190 2 0.272 3 0.388 4 0.441 Determination of [FeSCN]2+ in equilibrium mixtures For Sample #1: the initial concentration of Fe3+ 0.0010 M the equilibrium concentration of Fe3+. 9.54×10-4 M the initial concentration of HSCN. 4.00×10-4 M the equilibrium concentration of HSCN. 3.54×10-4 M Calculate Keq for sample 1. ?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Operating Wavelength : 462.8 nm
Preparation of Standard Calibration Curve of [FeSCN]2+
| Sample Number | Absorbance | Final Concentration of [FeSCN]2+(M) |
|---|---|---|
| A | 0.058 | 4.0E-5 |
| B | 0.174 | 8.0E-5 |
| C | 0.455 | 1.2E-4 |
| D | 0.740 | 1.6E-4 |
| E | 0.833 | 2.0E-4 |
Determination of [FeSCN]2+ in Equilibrium Mixtures
| Sample Number | Absorbance |
|---|---|
| 1 | 0.190 |
| 2 | 0.272 |
| 3 | 0.388 |
| 4 | 0.441 |
Determination of [FeSCN]2+ in equilibrium mixtures
For Sample #1:
the initial concentration of Fe3+
0.0010 M
the equilibrium concentration of Fe3+.
9.54×10-4 M
the initial concentration of HSCN.
4.00×10-4 M
the equilibrium concentration of HSCN.
3.54×10-4 M
Calculate Keq for sample 1. ?
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