4. A street drug dealer is known by police to sell methamphetamine. One of the dealer's friends was caught and told police that the dealer would substitute another more readily available stimulant with methamphetamine to make extra profits. The friend told police that the dealer sometimes purchased caffeine at the local drug store and sold it as methamphetamine. After busting the dealer, the police were left to figure out what exactly was being sold so the dealer could be taken to trial. Below are the IR spectra of both methamphetamine and caffeine. Which spectrum belongs to which compound? What bond accounts for the stretches labeled with arrows. Briefly explain how the police could use IR spectroscopy to determine which compound the drug dealer was selling? Relative Transmittance Relative Transmittance 0.8 0.6 0.4 0.2 1 1 0.996 0.992 0.988 0.984 -N * Caffeine 3000 Wavenumber (cm-1) NIST Chemistry WebBook (http://webbook.nist.gov/chemistry) INFRARED SPECTRUM INFRARED SPECTRUM N 2000 1000 HN Methamphetamine
4. A street drug dealer is known by police to sell methamphetamine. One of the dealer's friends was caught and told police that the dealer would substitute another more readily available stimulant with methamphetamine to make extra profits. The friend told police that the dealer sometimes purchased caffeine at the local drug store and sold it as methamphetamine. After busting the dealer, the police were left to figure out what exactly was being sold so the dealer could be taken to trial. Below are the IR spectra of both methamphetamine and caffeine. Which spectrum belongs to which compound? What bond accounts for the stretches labeled with arrows. Briefly explain how the police could use IR spectroscopy to determine which compound the drug dealer was selling? Relative Transmittance Relative Transmittance 0.8 0.6 0.4 0.2 1 1 0.996 0.992 0.988 0.984 -N * Caffeine 3000 Wavenumber (cm-1) NIST Chemistry WebBook (http://webbook.nist.gov/chemistry) INFRARED SPECTRUM INFRARED SPECTRUM N 2000 1000 HN Methamphetamine
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:4. A street drug dealer is known by police to sell methamphetamine. One of the dealer's friends
was caught and told police that the dealer would substitute another more readily available stimulant
with methamphetamine to make extra profits. The friend told police that the dealer sometimes
purchased caffeine at the local drug store and sold it as methamphetamine. After busting the
dealer, the police were left to figure out what exactly was being sold so the dealer could be taken
to trial. Below are the IR spectra of both methamphetamine and caffeine. Which spectrum belongs
to which compound? What bond accounts for the stretches labeled with arrows. Briefly explain
how the police could use IR spectroscopy to determine which compound the drug dealer was
selling?
Relative Transmittance
Relative Transmittance
0.8
0.6
0.4
0.2
1
1
0.996
0.992
0.988
0.984
3000
Wavenumber (cm-1)
NIST Chemistry WebBook (http://webbook.nist.gov/chemistry)
INFRARED SPECTRUM
wy
`N
3000
Caffeine
INFRARED SPECTRUM
2000
1000
2000
1000
Methamphetamine
HN
Wavenumber (cm-1)
NIST Chemistry WebBook (http://webbook.nist.gov/chemistry)
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