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Which reagent is used to eliminate the interference of a certain cation in the confirmatory test for Cobalt and Nickel?
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- Graphite furnace atomizers are renowned in Atomic Absorption Spectrometry for their exceptionally low detection limits (10-12 g and lower for many elements). Why are detectabilities so much better with graphite furnaces than with flame atom cells in AAS?Given the relationship between absorbance and equilibrium shift, why do you get an absorbance of 1.245 for addition of AgNo3 when absorbance of the reference solution is 0.526?Furosemide (MM: 330.7 g/mol) is a diuretic derived from anthranilic acid, this diuretic is used in the treatment of kidney disease, hypertension, liver cirrhosis, and others. Furosemide in alkaline dissolution has an absorption spectrum with a maximum peak centered at 271 nm. The analysis of a furosemide tablet was performed by dissolving its content in a 0.1 mol L-1 NaOH solution and this dissolution completed for a volume of 100 mL, with 1.0 mL of this dissolution was transferred to 50.0 ml and made up to volume with the same solvent. It is dissolution has an absorbance value of 0.475 to 271 nm, with a 1.0 cuvette cm of optical path. At this wavelength, a series of dissolutions of a Standard substance of this drug has the following absorbance measurements (1.0 cm bucket): a) Demonstrate whether the experimental data are in accordance with Bee's law (b) Determine absorptivity and molar absorptivity (c) Determine the amount of drug in the tablet in mg and in ppm (d) Determine the…
- Describe in details the quantitative spectrophotometric determination of a metal ion with a suitable example .13. Why do polar solvents destroy the absorption band's fine spectral structures?A copper(II) sulfate solution of unknown concentration is placed in a colorimeter and an absorbance reading of 0.46 is recorded. Using the same solution cell, a 0.055 Μ solution of copper(II) sulfate gives an absorbance reading of 0.34. What is the concentration of the first solution?
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