Solution Found!
a. An oxygen-containing compound shows an absorption band
Chapter 14, Problem 29P(choose chapter or problem)
Problem 29P
a. An oxygen-containing compound shows an absorption band at ~1700 cm−1 and no absorption bands at ~3300 cm−1, ~2700 cm−1, or ~1100 cm−1. What class of compound is it?
b. A nitrogen-containing compound shows no absorption band at ~3400 cm−1 and no absorption bands between 1700 cm−1 and 1600 cmWhat class of compound is it?
Questions & Answers
QUESTION:
Problem 29P
a. An oxygen-containing compound shows an absorption band at ~1700 cm−1 and no absorption bands at ~3300 cm−1, ~2700 cm−1, or ~1100 cm−1. What class of compound is it?
b. A nitrogen-containing compound shows no absorption band at ~3400 cm−1 and no absorption bands between 1700 cm−1 and 1600 cmWhat class of compound is it?
ANSWER:
Solution 29P
(a)
The functional groups aldehyde, ketones, acids, esters, amides, acid halides, and anhydrides contain carbonyl group.
The base values for C=O stretching vibrations for carbonyl groups is as follows:
Thus, the absorption band at indicates carbonyl group.