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What does a broad peak in an IR spectrum typically indicate?
What does a broad peak in an IR spectrum typically indicate?
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Practice Questions
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Q1
What does a broad peak in an IR spectrum typically indicate?
Strong hydrogen bonding
Weak molecular interactions
High molecular weight
Low concentration
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A broad peak in an IR spectrum often indicates strong hydrogen bonding, which causes a range of vibrational frequencies.
Questions & Step-by-step Solutions
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Q
Q: What does a broad peak in an IR spectrum typically indicate?
Solution:
A broad peak in an IR spectrum often indicates strong hydrogen bonding, which causes a range of vibrational frequencies.
Steps: 6
Show Steps
Step 1: Understand what an IR spectrum is. It is a graph that shows how a substance absorbs infrared light at different frequencies.
Step 2: Look at the peaks in the IR spectrum. Each peak represents a specific type of molecular vibration.
Step 3: Notice the shape of the peaks. A broad peak is wider than a sharp peak.
Step 4: Recognize that a broad peak usually means that there are many different vibrational frequencies happening at once.
Step 5: Learn that strong hydrogen bonding in a molecule can cause these different frequencies because the bonds are not all the same.
Step 6: Conclude that a broad peak in an IR spectrum typically indicates strong hydrogen bonding.
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