Find the [FeSCN^2+]eq ε=4.0×10^3 M-1 cm^-1 at 447 nm

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Find the [FeSCN^2+]eq

ε=4.0×10^3 M-1 cm^-1 at 447 nm

**Transcription of Data Table for Educational Purposes**

---

The table below presents data on absorbance and concentration of [FeSCN]²⁺ at equilibrium for different mixtures.

| Mixture # | Absorbance | [FeSCN]²⁺]ₑₓ     |
|-----------|------------|------------------|
| 1         | 0.35       | 5.6 x 10⁻⁵       |
| 2         | 0.50       | 8.0 x 10⁻⁵       |
| 3         | 0.62       | 1.0 x 10⁻⁴       |
| 4         | 0.77       | 1.3 x 10⁻⁴       |
| Blank     | 0.08       | -                |

**Explanation:**

- The "Mixture #" column identifies each mixture being tested.
- The "Absorbance" column shows the measured absorbance values for each mixture.
- The "[FeSCN]²⁺]ₑₓ" column provides the equilibrium concentration of the complex ion in scientific notation.

This table is useful for understanding how absorbance correlates with the concentration of the [FeSCN]²⁺ complex in solution, which is critical in spectrophotometric analyses.
Transcribed Image Text:**Transcription of Data Table for Educational Purposes** --- The table below presents data on absorbance and concentration of [FeSCN]²⁺ at equilibrium for different mixtures. | Mixture # | Absorbance | [FeSCN]²⁺]ₑₓ | |-----------|------------|------------------| | 1 | 0.35 | 5.6 x 10⁻⁵ | | 2 | 0.50 | 8.0 x 10⁻⁵ | | 3 | 0.62 | 1.0 x 10⁻⁴ | | 4 | 0.77 | 1.3 x 10⁻⁴ | | Blank | 0.08 | - | **Explanation:** - The "Mixture #" column identifies each mixture being tested. - The "Absorbance" column shows the measured absorbance values for each mixture. - The "[FeSCN]²⁺]ₑₓ" column provides the equilibrium concentration of the complex ion in scientific notation. This table is useful for understanding how absorbance correlates with the concentration of the [FeSCN]²⁺ complex in solution, which is critical in spectrophotometric analyses.
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