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Ch 14 Test Bank Exam 2024/2025 4th Edition by David R. Klein Questions With Completed Solution.
Ch 14 Test Bank Exam 2024/2025 4th Edition by David R. Klein Questions With Completed Solution.
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Ch 14 Test BankE. 1600 - 1850 cm-1
Which of the following wavenumbers corresponds to the C=O double bond region on an IR
spectrum?
A. 1500 - 4000 cm-1
B. 400 - 4000 cm-1
C. 400 - 1500 cm-1
D. 2100 - 2300 cm-1
E. 1600 - 1850 cm-1
D. 2100 - 2300 cm-1
Which of the following wavenumber corresponds to the carbon/carbon triple bond region on an
IR spectrum?
A. 1500 - 4000 cm-1
B. 400 - 4000 cm-1
C. 400 - 1500 cm-1
D. 2100 - 2300 cm-1
E. 1600 - 1850 cm-1
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B. I > II > III
D. III > I > II
, D. III > I > II
D. IV
C. III
C. III
A. I
E. IV > II > V > I > III
Compound I has a conjugated double bond that allows for more single bond character to the
carbonyl group. This results in absorption of the carbonyl group at a lower wavenumber.
for compound II the oxygen atom allows for additional resonance structures, which results in
more single bond character for the carbonyl group. This results in absorption of the carbonyl
group at a lower wavenumber.
A. I
C. sharp, absence of hydrogen bonding
38. Diluted alcohols show a _____absorption around 3600 cm-1, due to _____.
A. sharp, hydrogen bonding
B. broad, hydrogen bonding
C. sharp, absence of hydrogen bonding
D. broad, absence of hydrogen bonding
B. broad, hydrogen bonding
39. Concentrated alcohols show a _____absorption in the region of 3200-3600 cm-1, due to
_____.
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