Answer to Question #209414 in Organic Chemistry for shhh

Question

How many signals would the following 5 compounds give in proton (1H) NMR?

• CH₃-CH₂-O-CH₂-CH₃
• CH₃-OH
• (CH₃)₂-CH-(C=O)-CH₂-CH₃
• Benzene C₆H₆
• Methyl benzene

Answer 1

(A) The (H) NMR spectrum of diethyl ether shows two signals.

The molecule has a plane of symmetry, so the two CH₃ groups are equivalent, and the two CH₂ groups are equivalent.

We should see two signals with area ratios 6:4 or 3:2.

(b) 2

(c) 3

(d) 1

(e) 2