What type of compound corresponds to the IR spectrum shown here?MICRONS252.6272.82.9 31003.544.55.569 1012 13 14 15 16 17 1819 21220.0119005800.170600.2500.3400.4300.50.620C0.70.8101.02.04000 3800 3600 3400 3200 3000 2800 2600 2400 2200200018001600140012001000800600450WAVENUMBERSketonecarboxylic acidaminealcoholalkanemSORBANCE

IR spectrum is used to study and identify chemical substances or functional groups present in them…

What type of compound corresponds to the IR spectrum shown here? MICRONS 25 2.62.72.82.9 3 100 3.5 4. 4.5 55 9 10 12 13 14 15 16 17 1819 2122 0.0 11 90 05 80 0.1 70 60 0.2 50 0.3 40 0.4 30 0.5 C 0.6 0.7 0.8 20C 10 1.0 2.0 4000 3800 3600 3400 3200 3000 2800 2600 24002200 2000 1800 1600 1400 1200 1000 800 600 450 WAVENUMBERS

What type of compound corresponds to the IR spectrum shown here? MICRONS 25 2.62.72.82.9 3 100 3.5 4. 4.5 55 9 10 12 13 14 15 16 17 1819 2122 0.0 11 90 05 80 0.1 70 60 0.2 50 0.3 40 0.4 30 0.5 C 0.6 0.7 0.8 20C 10 1.0 2.0 4000 3800 3600 3400 3200 3000 2800 2600 24002200 2000 1800 1600 1400 1200 1000 800 600 450 WAVENUMBERS

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter13: An Introduction To Ultraviolet-visible Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 13.21QAP

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Similar questions

Which detector is suitable for compounds which do not absorb energy in the uv-vis region? a. UV-Vis detector b. IR detector c. Photodiode array detector
True or False. 1. The absorbance of a sample is equal to the negative logarithm of the transmittance. 2. Winkler method of dissolve oxygen determination is an example of iodometry. 3. A diazo compound is produced when nitrite is reacted with sulfanilamide in acidic solution. 4. Atomic Absorption Spectroscopy can be used to analyze the functional groups of organic substances. 5. A diode array spectrometer use an absorption or interference filters for wavelength selection and a photoelectric device for measuring radiant power. 6. The oxidation state for the manganese in the brown solid which precipitate in Winkler method is +3 7. In Winkler method, the iodine produced is oxidized during sodium thiosulfate titration to iodide ion. 8. When the pH of the solution is adjusted to pH greater than 12, the EDTA reacts with magnesium ions only, because calcium precipitates as calcium hydroxide.
Briefly explain why it is NOT accurate to calculate the concentration of a sample whose absorbance is 0.185 using the equation y=0.0022x+0.0005 r^2=0.999
List three factors that influence the intensity of an IR absorption band.
Monomer-dimer formation can affect the absorbance measurements using Beer’s law, it is an example of: A. chemical deviation B. instrumental deviation C. real deviation D. instrumental deviation
The Rf of four spots in a normal phase paper chromatography is given. Determine which of these is the most polar. Rf= 0.40Rf= 0.25Rf= 0.21Rf= 0.34
1) How does IR radiation affect absorbing molecules? Name an example molecule that does not absorb IR and briefly explain why. 2) Suppose you are able to figure out, correctly, all of the functional groups for an unknown organic molecule using FTIR. Explain why this might not be sufficient to pin down the exact structure of the molecule. What additional information could be useful? 3) Explain the basic operating principle of an ATR based sampling system? Give the advantages of an ATR-based sampling system compared to one based on direct transmittance of IR radiation in terms of sample thickness and preparation techniques?
Which of the following is not needed to use uv-vis absorption spectrometry as a quantitative technique ? a. The sample has to be in a solution form. b. The sample does not contain other molecules that absorb in wavelength used for analysis. c. The compound that will be monitored obey’s Beer Lambert’s law. d. The compound that will be monitored has only one Lambda max (wavelength with maximum absorption).
explain the results of this experiment Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011
explain the results of this experiment Table 1 Absorption Spectrum of Cobalt Chloride Using a Spectrophotometer Wavelength Absorbance 400 410 420 430 440 450 460 370 480 490 500 510 520 530 540 550 560 570 580 590 600 610 620 630 640 650 660 670 680 690 700 0.036 0.044 0.063 0.095 0.147 0.215 0.284 0.329 0.362 0.402 0.450 0.479 0.464 0.398 0.314 0.216 0.142 0.087 0.054 0.041 0.036 0.036 0.034 0.028 0.030 0.023 0.023 0.023 0.014 0.014 0.011 Test Tube Number Cobalt Chloride Concentration (mol/mL) Absorbance at 510 nm 1 0.000 0.000 2 0.009 0.042 3 0.018 0.92 4 0.027 0.139 5 6 0.036 0.045 0.190 0.236 7 0.029 mol/mL(Unknown) 0.151
Please create a caption for this table. Solution NaCl Conc. (%) Osmolality (mOsm) % transmittance Absorbance % hemolysis % crenation C distilled 0 0 0.001029 4.987584625 100 0.03354 1 0.177179111 54.61 0.001551 4.809388202 96.42720001 0.05837 2 0.297126222 91.58 0.01012 3.994819487 80.09527231 0.08444 3 0.442542222 136.4 3.849 1.414652089 28.3634704 0.134 4 0.590164444 181.9 64.8 0.188424994 3.777880643 0.2125 5 0.74752 230.4 95.64 0.019360433 0.388172513 0.3368 6 0.89644 276.3 99.56 0.001915112 0.038397585 0.5336 7 1.095648889 337.7 99.98 8.68676E-05 0.001741676 0.9834 8 1.336711111 412 100 0 0 2.1 9 1.755568889 541.1 100 0 0 7.9 10 2.674395556 824.3 100 0 0 57.83 11 4.490211111 1384 100 0 0 99.72
A. Copper sulfate pentahydrate is often used to teach students about Beer’s Law by making a standard curve (linear regression). The bright blue color of the solution has a peak absorbance in the red range of the electromagnetic spectrum. The absorbance value is proportional to concentration. How many grams of CuSO4 5H2O to make up 250 mL of a 0.2 M stock of this solution? B. Using M1V1 = M2V2 how many mL would a student need to measure out in graduated cylinder to make up a 50 mL (V2) solution of 0.1M, 0.05 M, 0.025M 0.0125M solutions for a standard curve at the peak wavelenth for this compound?