Question

In the proton NMR spectra of aldehydes and ketones, the protons bonded to carbons adjacent to the carbonyl group typically fall into which of the chemical shift ranges below?

A) 1.0-2.0 ppm
B) 2.0-3.0 ppm
C) 4.0-4.5 ppm
D) 7.0-8.0 ppm
E) 9.0-10.0 ppm

Answer 1

B) 2.0-3.0 ppm

Step-by-step explanation:

the carbons which are adjacent to the carbonyl group have protons which is common characteristic between aldehydes and ketones during NMR absorption.

carbons adjacent to the carbonyl group typically fall into which of the chemical shift ranges between 2.0 -3.0 ppm