Q1 please 1. The effect of IR radiation on a molecule isa) change of orientationc) change of configurationb) change of electron distributiond) b&c2. Which of the following can be used as an adsorbent in Columnadsorption chromatography?a) Magnesium Hydroxideb) Silica gelc) Aluminum Nitratea) Potassium permanganate3. Which of the following arrangement is correct in order of increasingenergya) UV < IR < Vis b) Vis < IR < UV c) IR < Vis < UV d) None of these.4. A substance available in a pure form or state of known purity, which isused in standardizing a solution is:a) standard solution b) aliquot c) titrant d) primary standard5. The molar concentration of a solution of acetic acid whose(K, for CH₂COOH = 1.8*10*)b) 0.316 Mc) 0.01 M d) 0.25 MpH=2.50 isa) 0.55 M

Q1). When IR radiation is fall in a molecule.we have to find out that what effect is happen in the…

Answered: 1. The effect of IR radiation on a…

1. The effect of IR radiation on a molecule is a) change of orientation c) change of configuration b) change of electron distribution d) b&c

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.31QAP

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Scott test is one of the methods used for screening for Cocaine in Forensic Chemistry. The multi step method consists of a) reacting the sample drug with cobaltous thiocyanate b) dissolving of the formed precipitate by adding HCl and c) extraction of coordination compound with Chloroform d) measurement of absorbance of extracted coordination compound at 627 nm. Which molar absorptivity will you use to calculate concentration of cocaine ? a.cocaine molar absorptivity b.cocaine -cobaltous thiocyanate complex molar absorptivity. c.HCl - cobaltous thiocyanate molar absorptivity d.cobaltous thiocyanate molar absorptivity
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One common way to determine Phosphorous in urine is to treat the sample after removing the protein, with molybdenum (VI) and then reduce the 12-molybdophosphate with ascorbic acid to give an intense blue color species called molybdenum blue. The Absorbance of molybdenum blue can be measured at 650 nm. A patient produced 1122 mL of urine in 24 hours. A 1.00 mL aliquot of the sample was treated with Mo(VI) and ascorbic acid and diluted to a volume of 50.00 mL. A calibration plot was prepared by treating 1.00 mL aliquots of Phosphate standard solutions in the same manner as the urine sample. The absorbances of the standards and the urine sample were obtained at 650 nm, and the following results were obtained: Solution absorbace at 650 nm 1.00 ppm P 2.00 ppm P 3.00 ppm P 4.00 ppm P Urine sample 0.230 0.430 0.630 0.840 0.518 (1) Construct a plot of the calibration curve and find the slope, intercept and the number of ppm of P in the sample. (ii) What mass in grams of phosphorous was…
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