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ORG MOL LAB > EXPERIMENT 7 IDENTIFICATION OF PHENOLS AND ALCOHOLS > Flashcards

EXPERIMENT 7 IDENTIFICATION OF PHENOLS AND ALCOHOLS Flashcards

1
Q

Specific groups of atoms in an organic molecule can determine its physical and chemical properties

A

FUNCTIONAL GROUPS

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2
Q

hydrocarbons, which contain the functional group -OH, the hydroxyl group, are called

A

ALCOHOLS

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3
Q

Most widely used alcohols are

A

METHANOL OR METHYL ALCOHOL, ETHANOL OR ETHYL ALCOHOL, 2-PROPANOL OR ISOPROPYL ALCOHOL

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4
Q

STRUCTURAL FORMULA OF METHANOL

A

CH3OH

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5
Q

STRUCTURAL FORMULA OF ETHANOL

A

CH3CH2OH

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6
Q

STRUCTURAL FORMULA OF 2-PROPANOL OR ISOPROPYL ALCOHOL

A

(CH3)2CHOH

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7
Q

found in automotive products such as antifreeze and “dry gas”

A

METHYL ALCOHOL

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8
Q

solvent for drugs and chemicals; alcoholic beverages

A

ETHYL ALCOHOL

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9
Q

rubbing alcohol or antiseptic

A

ISOPROPYL ALCOHOL

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10
Q

(TRUE/FALSE) Phenols tend to be more acidic than alcohols.

A

TRUE

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11
Q

(TRUE/FALSE) Concentrated solutions of the compound alcohol are quite toxic and can cause severe skin burns.

A

FALSE (phenol)

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12
Q

Phenol derivative that is used to kill fungi and hookworms

A

THYMOL

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13
Q

solvents for paints, shellacs and varnishes

A

METHANOL

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14
Q

solvents for paints, shellacs and varnishes

A

METHANOL

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15
Q

alcoholic beverages; solvent for medicines, perfumes

A

ETHANOL

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16
Q

astringent; for cosmetics and skin creams

A

ISOPROPYL ALCOHOL

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17
Q

antifreeze

A

ETHYLENE GLYCOL

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18
Q

sweetening agent; solvent for medicine lubricant; moistening agent

A

GLYCEROL (GLYCERIN)

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19
Q

antiseptic; clean surgical and medical instruments

A

PHENOL (CARBOLIC ACID)

20
Q

flavoring agent (vanilla)

A

VANILLIN

21
Q

irritant in poison ivy

A

TETRAHYDROURUSHIOL

22
Q

(TRUE/FALSE) Compounds containing hydroxyl group are polar, such as alcohols and phenols

A

TRUE

23
Q

(TRUE/FALSE) The polarity of the hydroxyl group, coupled with its ability to form hydrogen bonds, enable alcohols and phenols to mix with water.

A

TRUE

24
Q

a mixture of zinc chloride (ZnCl2)

A

LUCAS REAGENT

25
Q

Alcohols react with Lucas reagent, in concentrated HCl to form

A

ALKYL CHLORIDES

26
Q

(TRUE/FALSE) Alkyl chlorides are soluble.

A

FALSE (INSOLUBLE)

27
Q

a test used to distinguish between primary, secondary, and tertiary alcohols since this reaction takes place with different rates depending on the class of the alcohol

A

LUCAS TEST

28
Q

Upon the addition of Lucas reagent, a ______________ reacts rapidly and gives an insoluble white layer within 5 minutes

A

TERTIARY ALCOHOL

29
Q

reacts slowly and gives the white layer within 20 to 30 minutes, usually with slight heating

A

SECONDARY ALCOHOL

30
Q

No reaction upon the addition of Lucas reagent

A

PRIMARY ALCOHOL

31
Q

(TRUE/FALSE) Any formation of a heterogenous phase or appearance of an emulsion is a negative test.

A

FALSE (POSITIVE TEST)

32
Q

a strong oxidizing agent and can oxidize primary and secondary alcohols

A

CHROMIC ACID

33
Q

This test enables to distinguish primary and secondary alcohols from tertiary alcohols

A

CHROMIC ACID TEST

34
Q

primary alcohols are oxidized to carboxylic acids using

A

ACIDIFIED DICHROMATE SOLUTION

35
Q

Secondary alcohols are oxidized to

A

KETONES

36
Q

(TRUE/FALSE) In chromic acid test, tertiary alcohols are not oxidized.

A

TRUE

37
Q

(TRUE/FALSE) In the oxidation, the brown-red color of chromic acid changes to a blue-green solution.

A

TRUE

38
Q

Only ethyl alcohol and alcohols with the part structure CH3CH(OH) react. These alcohols react with iodine in aqueous sodium hydroxide to give the yellow precipitate iodoform.

A

IODOFROM TEST

39
Q

Phenol is also called __________

A

CARBOLIC ACID

40
Q

phenol is an acid and it reacts with base

A

ACIDITY OF PHENOL

41
Q

Addition of aqueous ferric chloride to a phenol gives a colored solution.

A

FERRIC CHLORIDE TEST

42
Q

(TRUE/FALSE) Depending on the structure of the phenol, the color can vary from yellow to purple.

A

FALSE (green to purple)

43
Q

enumerate the substances involved in experiment 7

A

1-butanol, 2-butanol, t-butyl, phenol and unknown

44
Q

(TRUE/FALSE) A purple color in Ferric chloride test indicates the presence of a phenol.

A

TRUE

45
Q

Tests involved in testing the Chemical Properties of alcohols and phenols

A

LUCAS TEST,
CHROMIC ACID TEST,
IODOFORM TEST,
FERRIC CHLORIDE TEST

ORG MOL LAB (2 decks)

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