How many non equivalent hydrogens are there in aspirin?
1 Answer
Jan 9, 2015
Aspirin has five non-equivalent hydrogens plus a set of three equivalent hydrogens that are different from the other five,
The IUPAC nape of aspirin is 2-acetoxybenzoic acid.
The sets of equivalent hydrogens are: CH₃, COOH, H-3, H-4, H-5, and H-6.
The NMR spectrum of aspirin has six peaks.
When you know more about NMR spectroscopy, you can assign these peaks as:
2.35 ppm — CH₃ (9)
7.14 ppm — H-3 (2)
7.36 ppm — H-5 (4)
7.62 ppm — H-4 (3)
8.12 ppm — H-6 (5)
10.7 ppm — COOH (7)
