Alcohols and Phenols

Question 1

Oxygen containing compounds such as alcohols, phenols and ethers are known as organic derivatives of

Answer 1

Water

Question 2

It contain a hydroxy group (OH) bonded to an sp 3 hybridized carbon

Answer 2

Alcohols

Question 3

They are classified according to the number of alkyl groups attached to carbon bearing the OH.

Answer 3

Alcohols

Question 4

Classification of Alcohols

Answer 4

Primary Alcohols (1 - R group)
Secondary Alcohols (2 - R groups)
Tertiary Alcohols (3 - R groups)

Question 5

In ______, the hydroxyl group is directly bonded to an aromatic system.

Answer 5

Phenols

Question 6

Lucas Test Reagent

Answer 6

Lucas Reagent (ZnCl2 + HCl)

Question 7

This is a solution of anhydrous zinc chloride in concentrated hydrochloric acid

Answer 7

Lucas Reagent

Question 8

Test for alcohols with six or fewer
carbons

Answer 8

Lucas Test

Question 9

Positive result of Lucas Test

Answer 9

formation of an insoluble layer, cloudiness, color change (red or orange) or an emulsion.

Question 10

In the Lucas Test, the classification of alcohols immediately gives a positive result.

Answer 10

Tertiary Alcohol

Question 11

In the Lucas Test, the classification of alcohols react slower than the tertiary alcohols.

Answer 11

Secondary alcohols

Question 12

This produces no identifiable cloudiness in Lucas test

Answer 12

Primary Alcohols

Question 13

This is a test for phenols and alcohols

Answer 13

Acetyl Chloride Tests

Question 14

It is the mixture in Lucas Reagent

Answer 14

HCL-ZnCl2 mixture

Question 15

Use to differentiate primary, secondary, and tertiary alcohol based on the difference in reactivity of the alcohol toward hydrogen halides

Answer 15

Lucas Test

Question 16

The Alkyl Chloride formed are soluble
True or False

Answer 16

False (it is insoluble)

Question 17

In the Lucas Test, the appearance of cloudiness indicates the formation of an alkyl chloride from the alcohol.
True or False

Answer 17

True

Question 18

Tertiary alcohols (low MW and water-soluble) react rapidly with HCL for a few minutes at room temperature, resulting in the conversion of the alcohol into a ________.

Answer 18

chloroalkane

Question 19

Low MW, water-soluble Primary and Tertiary alcohols are unreactive under these conditions.
True or false

Answer 19

True

Question 20

Result of 1-butanol in Lucas Test

Answer 20

Negative

Question 21

Result of 2-butanol in Lucas Test

Answer 21

Positive (reaction after several minutes)

Question 22

Result of tert-butanol in Lucas Test

Answer 22

Positive (fast reaction)

Question 23

Lucas Test applies only to those alcohols soluble in the reagent
True or False

Answer 23

True

Question 24

Positive Result: Evolution of heat and gas or a precipitate (production of hydrogen chloride gas)

Answer 24

Acetyl Chloride Test

Question 25

It has a limitation of when moisture is present in the unknown the result will give a positive test.

Answer 25

Acetyl Chloride Test

Question 26

Acetyl Chloride Test reagent

Answer 26

acetyl chloride

Question 27

It produces the corresponding carboxylic acid together with steamy acidic fumes of hydrogen chloride.

Answer 27

Acetyl Chloride test

Question 28

The reaction of this test is usually extremely vigorous at room temperature.

Answer 28

Acetyl Chloride test

Question 29

Alcohols react with acetyl chloride to form _____ and gives out _______.

Answer 29

esters and hydrogen chloride gas

Question 30

The hydrogen chloride formed gives ________ of ammonium chloride with ammonium hydroxide.

Answer 30

white fumes

Question 31

The reaction between phenol and ethanoyl chloride isn't quite as vigorous as that between alcohols and ethanoyl chloride. The reactivity of the -OH group is modified by the benzene ring. True or False

Answer 31

True

Question 32

A Ferric Chloride Test is used to identify phenols True or False

Answer 32

True

Question 33

Reagent of Ferric Test

Answer 33

Ferric Chloride or FeCl3

Question 34

Positive Result: Formation of colored complex (usually blue, green, reddish-brown, red or purple)

Answer 34

Ferric chloride Test

Question 35

Ferric chloride test is also known as

Answer 35

Iron (III) Chloride Test

Question 36

1-butanol reaction in Ferric test

Answer 36

Negative (because it is an alcohol)

Question 37

Phenol reaction in Ferric Chloride Test

Answer 37

Positive

Question 38

Bromine in Water Test reagent

Answer 38

Br2/H2O

Question 39

Positive Result: disappearance of the orange color

Answer 39

Bromine in Water Test

Question 40

Bromine in water test is used to identify phenols in a compound True or False

Answer 40

True

Question 41

Tandem test in classifying alcohol (except for Lucas Test)

Answer 41

Ritter Test / KMnO4

Question 42

Positive test: disappearance of violet color in cold concentrated sulfuric acid and Brown Precipitate

Answer 42

Ritter test

Question 43

In Tandem Test what classification of alcohols has a positive results

Answer 43

Primary and Secondary Alcohol

Question 44

It is soluble in aqueous NaOH but not in aqueous NaHCO3

Answer 44

PHENOLS

Question 45

It forms colored complex with FeCl3 (green, blue, violet, red)

Answer 45

Phenols

Question 46

In oxidation of phenols KMnO4 and H2CrO4 will results in

Answer 46

KMnO4 - black ppt (precipitate) H2CrO4 - opaque green

Question 47

Phenols in Bromine in water test will result in ________.

Answer 47

white ppt. of 2,4,6 - tribromophenol