5.1 & 5.2

Question 1

Base peak

Answer 1

Peak of greatest abundance in a mass spectrum.

Question 2

Molecular ion peak

Answer 2

A peak produced by an ion formed by the removal of one electron from a molecule.

Question 3

M+1 peak

Answer 3

A peak produced by a molecular ion with an increased mass due to the presence of one carbon-13 atom.

Question 4

Fragmentation ion

Answer 4

A positively charged ion produced when the molecular ion breaks apart.

Question 5

Low resolution nmr

Answer 5

A spectrum which does not show the spin-spin splitting pattern.

Question 6

High resolution nmr

Answer 6

A spectrum which does show the spin-spin splitting pattern.

Question 7

Doublet

Answer 7

A signal which appears as a pair of lines of equal intensity.

Question 8

Triplet

Answer 8

A signal which appears as three lines in the approximate intensity ratio (1:2:1)

Question 9

Quartet

Answer 9

A signal which appears as four lines in the approximate intensity ratio (1:3:3:1)