The following data have been obtained in the calibration of a series of standards for the determination of iron, measuring the transmittance, at 506 nm and thickness of 1.00 cm of iron (II) solutions in which color with 1.10 has been developed -phenanthroline. [Fe] (ppm) 0.20 0.40 0.60 0.80 1.00 2.00 3.00 4.00 5.00 6.00 7.00 T (%) 90.0 82.5 76.0 69.5 63.5 41.0 26.3 17.0 10.9 7.0 4.5 Calculate the mean molar absorptivity of iron when determined by this method
The following data have been obtained in the calibration of a series of standards for the determination of iron, measuring the transmittance, at 506 nm and thickness of 1.00 cm of iron (II) solutions in which color with 1.10 has been developed -phenanthroline. [Fe] (ppm) 0.20 0.40 0.60 0.80 1.00 2.00 3.00 4.00 5.00 6.00 7.00 T (%) 90.0 82.5 76.0 69.5 63.5 41.0 26.3 17.0 10.9 7.0 4.5 Calculate the mean molar absorptivity of iron when determined by this method
Chapter25: Instruments For Optical Spectrometry
Section: Chapter Questions
Problem 25.22QAP
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The following data have been obtained in the calibration of a series of standards for the determination of iron, measuring the transmittance, at 506 nm and thickness of 1.00 cm of iron (II) solutions in which color with 1.10 has been developed -phenanthroline.
[Fe] (ppm) |
0.20 |
0.40 |
0.60 |
0.80 |
1.00 |
2.00 |
3.00 |
4.00 |
5.00 |
6.00 |
7.00 |
T (%) |
90.0 |
82.5 |
76.0 |
69.5 |
63.5 |
41.0 |
26.3 |
17.0 |
10.9 |
7.0 |
4.5 |
Calculate the mean molar absorptivity of iron when determined by this method.
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