2. The absorbances of a series of solutions containing Fe3+ and excess thiocyanate ions were measured at 680 nm with the
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2. The absorbances of a series of solutions containing Fe3+ and excess thiocyanate ions were measured at 680 nm with the following results: 0.25 0.63 1.56 3.91 103 [Fe 2+] mol-1 dm3 0.10 Absorbance 0.017 0.041 0.098 0.220 0.443 (i) Is the Beer Lambert Law obeyed under these conditions by the nickel (Fe3+) thiocyanate complex? Show clearly how you arrived at your answer.
What is the [Fe3+] in a solution whose absorbance is 0.300 under the same conditions? Show the steps by which You obtained your answer, inclusive of the final units.