Question 1
Which of the following pieces of information can X-ray crystallography not give directly?
The location of individual atoms
Internuclear distances
The identity of individual atoms
Bond angles
0%
DP IB Chemistry: HL
Topic Questions
21.1 Spectroscopic Identification of Organic compounds
Question 2
The IUPAC name of mellitene, C6(CH3)6, is 1,2,3,4,5,6-hexamethylbenzene.
What splitting pattern will be seen on the 1H NMR spectrum for mellitene?
Singlet
Doublet
Triplet
Quartet
Question 3
Using the mass spectrum below, what is the molecular ion peak of 2-methylbutane?
29
43
57
72
Question 4
Which of the following chemicals has a singlet peak in its 1H NMR spectrum?
I and II only
I and III only
II and III only
I, II and III
Question 5
The structure of 2-chloropropane is shown below.
Which description of the peaks in the 1H NMR spectrum of 2-chloropropane is correct?
1 peak with a relative intensity of 6
2 peaks with relative intensities of 3 : 4
2 peaks with relative intensities 6 : 1
3 peaks with relative intensities of 3 : 1 : 3
