Question 1

How many distinct proton NMR signals does ethylene ($$\mathrm{C_2H_4}) $$exhibit?

Accepted Answer

1

Question 2

A tert-butyl group ($$\mathrm{(CH_3$)_3C}) $$has a characteristic singlet in its $$^1H $$NMR spectrum. How many protons are responsible for this singlet?

Accepted Answer

9

Question 3

The addition of water to ethylene ($$\mathrm{C_2H_4}) $$under acid catalysis produces which compound?

Accepted Answer

ethanol

Question 4

Treatment of an alkyne with $$\mathrm{$$NaNH_2$$}$$ followed by a proton source will give:

Accepted Answer

a terminal alkyne

Question 5

Which compound is obtained from the treatment of 3-methyl-3-pentanol with ionic $$\mathrm{H_2SO_4}$$?

Accepted Answer

3-methyl-2-pentene

Question 6

A doublet of doublets and an upfield triplet in a $$^1H $$NMR spectrum is characteristic of a(n) _____ group.

Accepted Answer

isopropyl

Question 7

The reaction of cyclohexanol with cold aqueous $$\mathrm{$$KMnO_4$$}$$ will give:

Accepted Answer

cyclohexanone

Question 8

Which compound can be made from the reaction of sodium and phosphorus on methanol?

Accepted Answer

$$\mathrm{CH_3Cl}$$

Question 9

What is the oxidation state of chromium in potassium dichromate ($$\mathrm{K_2Cr_2O_7}$$)?

Accepted Answer

+6

Question 10

Which compound will form by reacting 1-bromobutane with sodium acetylide?

Accepted Answer

hex-1-yne

Question 11

Treatment of ethylene oxide with concentrated aqueous hydrochloric acid will first result in:

Accepted Answer

protonation

Question 12

Absolute elimination of hydrogen bromide (2 equivalents) from 1,2-dibromocyclohexane will give:

Accepted Answer

cyclohexyne

Question 13

How many protons can acetylene ($$\mathrm{C_2H_2}) $$transfer to a strong base?

Accepted Answer

2

Question 14

Which compound below can be made from ethene using basic aqueous permanganate?

Accepted Answer

ethylene glycol

Question 15

The reaction of cyclohexanol with toluene and phosphorus will give:

Accepted Answer

cyclohexyl chloride

Question 16

Which compound is obtained from the oxidation of 1-butanol with chromic acid?

Accepted Answer

butyric acid

Question 17

The addition of $$\mathrm{HBr} to 2-$$methyl-1-propene will give:

Accepted Answer

tert-butyl bromide

Question 18

Can diimide gas be used to reduce double bonds when used with a catalyst?

Accepted Answer

yes

Question 19

Which compound is obtained from the treatment of sodium ethoxide with ethanol?

Accepted Answer

sodium ethoxide and hydrogen gas

Question 20

Which of the following could be formed using sodium borohydride?

Accepted Answer

cyclohexanol

Organic Chemistry: NMR Spectroscopy and Alkene/Alkyne Reactions – Study Guide

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