Identification from spectra: Question 10

Spectroscopic identification of organic compounds: Question 10

Identify compound J from the data (ad) given and explain how you arrived at your answer.

a) Elemental analysis of compound J

Element

Percentage by mass

Carbon

70.56

Hydrogen

5.93

Oxygen

23.51

b) Mass spectrum of compound J

c) Infrared spectrum of compound J

Note that this spectrum is in the gas phase. In the liquid phase there is also a broad absorption present, centred just below 3000 cm-1

d) Information about compound J from 1H NMR spectrum

Position of signal / δ ppm

Integration trace

3.7

2

7.4

5

10.8

1

Download the  Identification from spectra question (10) to give to students.

To see the worked answer go to Identification from spectra (10) Answer.

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.