6. High performance liquid chromatography (HPLC) can be used to :a. identify the various pigments from a leaf extract.b. separate types of organic pesticides.C. determine the mercury content of a fish sampled. all of the above are correct 7. The compound eluted last and retained more in Normal phase Chromatography are:A. Polar compoundsB. Non- polar and Polar compoundsC. Non polar compoundsD. ionic compounds

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Answered: 6. High performance liquid…

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter2: Resolution Of Matter Into Pure Substances, I.paper Chromatography

Section: Chapter Questions

Problem 2ASA

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4 . The labware we used in Quant Lab is divided into “qualitative” or “quantitative” analytical purpose. One of the important laboratory skills we learned is to know what specific apparatus is appropriate for the task at hand. For the following procedures, which SPECIFIC glassware, or balance ( CORRECT NAMES, be specific ) should be used? Weigh about 2 g of solid KI to be added to the sample solution. ___________ Obtain a unknown water sample to be diluted to 250 mL for the determination of its hardness. ____________ Collect washings from the crucible suction to see if the AgCl precipitate still contains unreacted silver (I). _________ Mix K2Cr2O7 and KI solutions to be ready for titration. The mixture container is _______________ Measure the mV values of fluoride standard and sample solutions. Theoretically, the solution containers should be _______________________ Weigh 1 g solid KSCN that is poured into the thiosulfate – iodine titration.…
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