1. Which of the following mass spectral phenomena would indicate the presence of

ID: 721785 • Letter: 1

Question

1. Which of the following mass spectral phenomena would indicate the presence of an odd number of nitrogen atoms in a molecule?

a) the molecular ion peak had an odd number for its m/z ratio

b) the molecular ion peak had an even number for its m/z ratio

c) the molecular ion peak is also the base peak

d) the molecular ion peak is missing from the spectrum

e) none of the above

2. Which of the following compounds would show a very large, broad absorption peak at around 3300 cm-1 in the IR spectrum?

a) 1-butyne

b) 2-butyne

c) butane

d) 1-butanol

e) methyl ethyl ether

3. Considering both configurational and conformational factors, what is the most stable form of 2,4-hexadiene?

a) I

b) II

c) III

d) IV

e) V

1. a) 2. e) 3. c)

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