In infrared spectroscopy, which functional group would show a strong absorption around 1700 cm-1?
Practice Questions
1 question
Q1
In infrared spectroscopy, which functional group would show a strong absorption around 1700 cm-1?
Alcohols
Aldehydes
Carboxylic acids
Ketones
Ketones typically show a strong absorption around 1700 cm-1 due to the C=O stretching vibration.
Questions & Step-by-step Solutions
1 item
Q
Q: In infrared spectroscopy, which functional group would show a strong absorption around 1700 cm-1?
Solution: Ketones typically show a strong absorption around 1700 cm-1 due to the C=O stretching vibration.
Steps: 5
Step 1: Understand what infrared spectroscopy is. It is a technique used to identify functional groups in molecules based on how they absorb infrared light.
Step 2: Know that different functional groups absorb infrared light at specific wavenumbers (measured in cm-1).
Step 3: Recognize that the carbonyl group (C=O) is a common functional group that absorbs infrared light.
Step 4: Learn that ketones, which contain a carbonyl group, typically show a strong absorption around 1700 cm-1.
Step 5: Conclude that if you see a strong absorption around 1700 cm-1 in an infrared spectrum, it likely indicates the presence of a ketone.
