FREQUENCY (CM) 4000 3600 3200 2800 2400 2000 1800 1600 1400 1200 1000 800 600 400 TRANSMITTANCE (%) 80 CI 60 CI-C-CI Cr 40 20 FREQUENCY (CM) 4000 3600 3200 2800 2400 2000 1800 TRANSMITTANCE (%) 25 20 4800 CH 80 1600 VC-c 1400 1200 1000 800 600 400 60 Nujol CH 40 CH₂ 20 INCRONG %T Potassium Bromide - KBr 2500 . • 10 Data Supplied by KORTH KRISTALLE GMBH Wavenumber 1200 = 13 14 11820 25

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
Chapter34: Particle Size Determination
Section: Chapter Questions
Problem 34.14QAP
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Given the background IR spectra, rank the three methods (Nujol mull, CCl4 solution, and KBr pellet) in order of best to worst spectra collected on a solid sample and explain your ranking.

FREQUENCY (CM)
4000
3600
3200
2800
2400
2000
1800
1600
1400
1200
1000
800
600
400
TRANSMITTANCE (%)
80
CI
60
CI-C-CI
Cr
40
20
FREQUENCY (CM)
4000
3600
3200
2800
2400
2000
1800
TRANSMITTANCE (%)
25
20
4800
CH
80
1600
VC-c
1400
1200
1000
800
600
400
60
Nujol
CH
40
CH₂
20
INCRONG
%T
Potassium Bromide - KBr
2500
.
•
10
Data Supplied by
KORTH KRISTALLE GMBH
Wavenumber
1200
=
13 14 11820
25
Transcribed Image Text:FREQUENCY (CM) 4000 3600 3200 2800 2400 2000 1800 1600 1400 1200 1000 800 600 400 TRANSMITTANCE (%) 80 CI 60 CI-C-CI Cr 40 20 FREQUENCY (CM) 4000 3600 3200 2800 2400 2000 1800 TRANSMITTANCE (%) 25 20 4800 CH 80 1600 VC-c 1400 1200 1000 800 600 400 60 Nujol CH 40 CH₂ 20 INCRONG %T Potassium Bromide - KBr 2500 . • 10 Data Supplied by KORTH KRISTALLE GMBH Wavenumber 1200 = 13 14 11820 25
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