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- Describe how you will use the Raman spectroscopy to gain qualitative and quantitative information on Sudan IV dye in adulterated palm oil. Explain basis of analytical protocol.Explain IR spectroscopy as a characterization technique.Flame Atomic Absorption Spectroscopy (FAAS) method is selected due to its wide applicability for metal ion analysis in drinking water samples. Discuss how can we determine the concentration of selected heavy metals (Cu and Cr) in the unknown tap water sample.
- 6. A sample of an alum was analysed by atomic spectroscopy and gravimetrically to determine its structure. A 0.1000 g of the sample when treated with BaCl₂ produced 0.0984 g of a white solid after drying to constant weight. Another 0.1000 g sample of the alum when heated at 105°C for several hours produced a weight loss of 0.04558 g while the % of K in the sample was determined by atomic spectroscopy to be 8.240%. Use these results to work out a formula for the alum. [M,/ g mole¹: K 39.10; Al 26.98; BaSO, 233.39; SO² 96.06; H₂O 18.0148]Why is NMR the most powerful tool in organic chemistry and how is it better than IR spectroscopy?1. What is the difference between UV-Vis and Flame spectroscopy?
- Explain why an internal standard is required during sample preparation in quantitative analysis when using atomic spectroscopy?Define mass spectroscopy and the underlying principle/background of its method for characterizing samples.Why is effective water suppression an essential component of solution state biomolecular NMR spectroscopy?