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Topic B4 - Organic Analysis
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Total cards: 4•Content version: v4•Public deck•Updated: 8/1/2026
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#1
Front (Question)
How does infrared spectroscopy work?
Back (Answer)
-bonds absorb infrared radiation, causing bonds to vibrate -bonds vibrate at particular frequencies -this produces a spectrum of different absorptions corresponding to the different bonds
#2
Front (Question)
Why do most organic compounds have a peak at around 3000cm-1 on the infrared spectrum?
Back (Answer)
alkyl group (C-H bonds) which all absorb at a similar frequency
#3
Front (Question)
What are the links of infrared radiation to climate change?
Back (Answer)
-greenhouse gases (e.g. CO2) contain bonds that absorb infrared radiation -trap infrared radiation in earth’s atmosphere
#4
Front (Question)
2 other uses of infrared spectroscopy
Back (Answer)
-detecting air pollutants -breathalyser tests