In IR spectroscopy, what does a peak at around 1700 cm-1 typically indicate?
Practice Questions
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Q1
In IR spectroscopy, what does a peak at around 1700 cm-1 typically indicate?
Presence of alcohols
Presence of carbonyl groups
Presence of amines
Presence of alkenes
A peak at around 1700 cm-1 in IR spectroscopy typically indicates the presence of carbonyl (C=O) groups, which are characteristic of ketones and aldehydes.
Questions & Step-by-step Solutions
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Q
Q: In IR spectroscopy, what does a peak at around 1700 cm-1 typically indicate?
Solution: A peak at around 1700 cm-1 in IR spectroscopy typically indicates the presence of carbonyl (C=O) groups, which are characteristic of ketones and aldehydes.
Steps: 5
Step 1: Understand what IR spectroscopy is. It is a technique used to identify functional groups in molecules by measuring how they absorb infrared light.
Step 2: Know that different functional groups absorb infrared light at specific wavelengths, which are measured in cm-1.
Step 3: Recognize that a peak at around 1700 cm-1 is a specific wavelength where certain groups absorb light.
Step 4: Identify that the peak at this wavelength is typically associated with carbonyl (C=O) groups.
Step 5: Remember that carbonyl groups are found in compounds like ketones and aldehydes.
