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Finals Org Chem > Finals > Flashcards

Finals Flashcards

1
Q

AN ORGANIC COMPOUNDS THAT CONTAINS CARBOXYL GROUP

A

Carboxylic acid

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2
Q

WHICH IS MORE ACIDIC? Stearic or acetic?

A

Acetic

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3
Q

WHAT WILL BE THE PRODUCT FORMED WHEN ACETIC ACID REACT WITH SODIUM HYDROXIDE

A

sodium acetate and water.

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4
Q

VISUAL EVIDENCE WHEN ACETIC ACID REACTS WITH SODIUM CARBONATE

A

Release of carbon dioxide

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5
Q

chemical reaction that forms at least one ester (= a type of compound produced by reaction between acids
and alcohols).

A

Esterification

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6
Q

PRODUCT FORMED WHEN ACETIC ACID WAS ADDED TO N PROPYL ALCOHOL

A

Propyl acetate

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7
Q

ODOR PRODUCED IN ESTERIFICATION OF ACETIC ACID

A

Pungent odor

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8
Q

WHAT HAPPEN WHEN ACETIC ACID WAS ADDED TO AMMONIUN HYDROXIDE?

A

There is a formation of precipitate (?)

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9
Q

VISUAL EVIDENCE WHEN TARTARIC ACID WAS ADDED TO NAH WITH KMNO4.

A

PERMANENT PURPLE COLOR APPEAR

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10
Q

WHAT HAPPEN WHEN POTASSIUM PERMANGANATE WAS ADDED TO CITRIC ACID

A

FORMATION OF YELLOW COLOR SOLUTION

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11
Q

is a chemical reaction in which water is used to break down the bonds of a particular substance.

A

Hydrolysis

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12
Q

VISUAL EVIDENCE WHEN ACETAMIDE WAS TREATED WITH SODIUM HYDROXIDE

A

GAS IS EVOLVED

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13
Q

a process by which triglycerides are reacted with sodium or potassium hydroxide (lye) to produce glycerol and
a fatty acid salt called” soap

A

Saponification

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14
Q

test for aromatic primary amides

A

Hydroxamic acid test

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15
Q

AN ORGANIC COMPOUND DERIVED FROM AMMONIA BY REPLACEMENT OF ONE OR MORE
HYDROGEN ATOMS BY ORGANIC GROUPS

A

Amines

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16
Q

WHAT HAPPEN WHEN BROMINE WATER IS ADDED TO ANILINE DROP BY DROP

A

FORMATIONOF WHITE PRECIPITATE and decolonization

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17
Q

A TEST FOR DETECTING THE PRIMARY, SECONDARY AND TERTIARY AMINE

A

The Hinsberg reaction

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18
Q

VISUAL EVIDENCE WHEN ANILINE REACTED WITH CONCENTRATED HCL AND SODIUM NITRITE

A

Formation of precipitate

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19
Q

COMPOSITION OF MAYERS REAGENT

A

Potassiummercuric IODIDE SOLUTION

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20
Q

COMPOSITON OF DRAGENDORFF’S REAGENT.

A

SOLUTION OF POTASSIUM BISMUTH IODIDE

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21
Q

THESE ARE AROMATIC ORGANIC COMPOUND WITH THE MOLECULAR FORMULA OF C6H5OH WITH A
WHITE CRYSTALLINE AND SOLID FORM.

A

Phenol

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22
Q

VISUAL EVIDENCE WHEN PHENOL REACTED WITH FERRIC CHLORIDE

A

FORMATION OF VIOLET COLOR

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23
Q

IT IS USED TO DETECT THE PRESENCE OF PHENOLIC COMPOUND

A

Litmus test

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24
Q

VISUAL EVIDENCE WHEN BROMINE WATER WAS ADDED TO PHENOL

A

DECOLORATION OF BROMINE AND FORMATION OF PRECIPITATE

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25
Q

WHAT WILL BE THE PRODUCT IF PHENOL WAS REACTED TO BROMINE IN WATER?

A

2,4,6TRIBROMOPHENOL

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26
Q

Phenol on heating with phthalic anhydride in the presence of concentrated sulfuric acid forms a colourless
condensation compound

A

phenolphthalein.

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27
Q

further reaction of phenol with phthalic anhydride with dilute sodium hydroxide solution will give a

A

pink color solution called fluorescein.

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28
Q

it is used to determine the presence of protein

A

millons test

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29
Q

visual evidence when phenol react with Millons Test

A

formation of red precipitate

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30
Q

which of the test sample will give a positive result to Millon’s test
O egg albumin
O phenol
O alanine
O albumin and phenol

A

albumin and phenol

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31
Q

what will be the product when phenol reacted with sodium hydroxide

A

sodium phenoxide

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32
Q

which of the following test sample will not react with 2, 4 dinitrophenyl hydrazine
O benzladehyde
O formalin
O acdtone
0 amide solution

A

amide solution

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33
Q

it is sued qualitatively to detect the carbonyl functionality of a ketone or aldehyde functional group

A

Tollens ‘ test

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34
Q

other name for 2, 4 dintrophenylhydrazine

A

Brady’s reagent.

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35
Q

ORGANIC COMPOUND USED TO DETECT ALDEHYDES

A

TOLLENS TEST

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36
Q

WHAT COMPOSED THE SCHIFF’S REAGENT

A

PARASOANILINE WITH SULFUROUS ACID

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37
Q

WHAT WILL HAPPEN WHEN ALDEHYDES AND KETONES REACTED WITH SODIUM BISULFITE TEST

A

WILL FORM A WATER SOLUBLE crystalline BISULFITE

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38
Q

IT IS A CHEMICAL REAGENT USED TO DETERMINE THE PRESENCE OF ALDEHYDE AND AROMATIC
ALDEHYDE FUNCTIONAL GROUP ALONG WITH SOME ALPHA HYDROXY KETONE WHICH CAN
TAUTOMERIZE INTO ALDEHYDE

A

Tollen’s reagent

39
Q

SOMETIMES CALLED SILVER MIRROR TEST

A

Tollen’s test

40
Q

TEST SAMPLE WHICH IS NEGATIVE WITH TOLLENS TEST
O ACETALDEHYDE
O BENZALDEHYDE
O FORMALIN
O ACETONE

41
Q

WHAT COMPOSED TOLLENS REAGENT

A

SILVER NITRATE WITH SODIUM HYDROXIDE

42
Q

POSITIVE RESULT WHEN TOLLENS REAGENT REACTED TO TEST SAMPLE

A

FORMATION OF SILVER MIRROR

43
Q

IT IS A CHEMICAL TEST USED TO DETECT REDUCING SUGAR AND ALDEHYDE IN A SOLUTION

A

FEHLINGS TEST

44
Q

APPEARANCE OF

INDICATE THE PRESENCE OF ALDEHYDE GROUP WHEN TREATED WITH FEHLINGS REAGENTS

A

BRICK RED PRECIPITATE

45
Q

A CHEMICAL TEST USED TO DETECT THE PRESENCE OF THIOL GROUP OF CYSTEINE IN PROTEIN

A

SODIUMNITROPRUSSIDE TEST

46
Q

POSTIVE RESULT FOR SODIUM NITROPRUSSIDE TEST

A

WINE RED IN COLOR

47
Q

USED IN CLINICAL TEST TO DETECT THE PRESENCE OF ACETONE IN URINE

A

SODIUM NITROPRUSSIDE TEST

48
Q

FORMULA FOR IODOFORM WHICH FORM A YELLOW PRECIPITATE

A

CHI3 (triiodomethane)

49
Q

WHAT WILL BE THE PRODUCT WHEN BENZALDEHYDE UNDERGOES AUTOOXIDATION

A

benzoic acid

50
Q

a chemical test which is used to check for the presence of carbohydrates in a given analyte.

A

Molisch’s test

51
Q

WHAT COMPOSED MOLISCH REAGENT?

A

ALPHA NAPHTHOL DISSOLVE IN ETHANOL

52
Q

POSITIVE EVIDENCE FOR MOLISCH TEST

A

PURPLE RING

53
Q

“is used to
determine if glycerin or fats are
present.

A

acrolein test”

54
Q

Test for glycerol is also called

A

Acrolein test

55
Q

Chromic acid test reagents

A

5% potassium dichromate
5% sulfuric acid

56
Q

Visual evidence of positive chromic acid test

A

The disappearance of the red-orange color of chromic acid and the formation of a blue-green color of the Cr (III) ion

57
Q

Chromic acid which tested positive n-butyl sec butyl tert butyl

A

N-butyl and sec-butyl tested positive tert-butyl remained yellowish orange

58
Q

Lucas test reagent

A

Lucas reagent

59
Q

Lucas reagent is composed of

A

anhydrous zinc chloride in concentrated hydrochloric acid

60
Q

used to differentiate and categorize primary, secondary and tertiary alcohols

A

Lucas test

61
Q

Visual evidence of positive lucas test

A

The observation of a change where the clear and colourless characteristic of the solution changes to a turbid, cloudy, and hazy one

62
Q

Results in lucas test:
N-butyl
Sec-butyl
Tert-butyl
Benzyl alcohol

A

N butyl and sec butyl no reaction (negative)
Tert-butyl became cloudy and benzyl alcohol became cloudy and decolorized (positive)

63
Q

Esterification reagent

A

5% salicylic acid

64
Q

Esterification for methanol result

A

White precipitate formed. After adding methanol it became clear and produced strong fruity odor

65
Q

Special test for methanol reagent

A

Copper wire, 0.5% resorcinol and conc, h2S04 (Sulfuric acid)

66
Q

Special test for methanol result

A

After dipping copper wire 20-25 times solution turned pink/purple. After adding resorcinol and sulfuric acid it became clear

67
Q

Iodoform test (for alcohols) reagent

A

Iodine solution
10% NaOH (Sodium hydroxide)

68
Q

used to check the presence of carbonyl compounds with the structure R-CO-CH3 or alcohols with the structure R-CH(OH)-CH3 in a given unknown substance.

A

Iodoform test

69
Q

Iodoform test results (test for methyl ketones)
Acetone
Ethyl methyl ketone
Ethyl acetate

A

Acetone formed a yellow precipitate
Ethyl methyl ketone formed a yellow precipitate
Ethyl acetate formed a yellow precipitate and turned brownish-red precipitate

70
Q

Iodoform test for alcohols
Methyl
Ethyl
Isopropyl

A

Methyl- sweet odor no precipitate
Ethyl- sweet odor precipitate formed
Isopropyl -smells like betadine pale yellow precipitate

71
Q

Acrolein test for glycerol reagent

A

Potassium bisulfate khso4

72
Q

Tests for the carbonyl Group reagent

A

2,4 dinitrophenyl hydrozine

73
Q

Tests for the carbonyl Group results
1. 2,4 - DNPH
acetophenone
benzaldehyde
formalin
acetone

A

acetophenone -precipitate formed
benzaldehyde -precipitate formed
formalin-precipitate formed
acetone-no precipitate formed

74
Q

Sodium Bisulfite Test reagent

A

40% NaHSO3 (sodium bisulfate) in ethanol

75
Q

Sodium Bisulfite Test results
Acetaldehyde
Acetone

A

Acetaldehyde - off white precipitate formed
Acetone - white precipitate formed
Both positive

76
Q

Test for the Aldehydes results
1. Schiff’s Test
Formalin
Acetone
Benzaldehyde
Acetophenone

A

Formalin - turned dark purple
Acetone - turned light pink/purple
Benzaldehyde - magenta
Acetophenone - solution crystallized

77
Q

Tollen’s Test results
Formalin
Benzaldehyde
Glucose
Acetone

A

Formalin - grey precipitate )
Benzaldehyde - dark grey precipitate
Glucose - pink/clear solution
Acetone - clear solution

78
Q

lodofrom Test reagent
Acetone
Ethyl methyl ketone
Ethyl acetate

A

Iodine in Kl (potassium iodide)

79
Q

Molisch’s Test result
Glucose
Stärch
Benzaldehyde

A

Glucose -greenish to violet layer (positive)
Stärch - white precipitate and violet on top (positive)
Benzaldehyde - pink solution to clear solution

80
Q

Tests for Carboxylic Acids reagent
1. Reaction with H20 & Indicators
acetic acid
stearic acid

A

Methyl orange indicator

81
Q

Tests for Carboxylic Acids results
1. Reaction with H20 & Indicators
acetic acid
stearic acid

A

acetic acid - soluble, turned blue litmus to red, turned dark orange
stearic acid- insoluble, turned litmus paper blue to red, turned red after adding indicator

82
Q

Test for carboxylic acid
Reagent
Reaction with NaCO3
Acetic acid

A

5% Na2CO3 ( sodium carbonate)

83
Q

Test for carboxylic acid
Results
Reaction with NaCO3
Acetic acid

A

Fizzing of bubbles was observed

84
Q

Test for carboxylic acid reagent
Reaction with neutral FeCl3
Acetic acid
Tartaric acid

A

Neutral FeCI3 (iron(iii)chloride) solution

85
Q

Hydroxamic Test reagent
Prelim
Final

A

1N HCI
5% FeCI3

86
Q

Hydroxamic Test result
Prelim
Final

A

Prelim - yellow color
Final - burgundy color

87
Q

Reaction with NaOH results
acetic acid
stearic acid

A

acetic acid - formation of bubbles
stearic acid - forms salt and warer

88
Q

Reaction with NaOH reagent
acetic acid
stearic acid

A

5% NaOH (sodium hydroxide)

89
Q

Esterification reagent
acetic acid
stearic acid

A

N-propyl alcohol
Conc. H2SO4 (sulfuric acid)

90
Q

Esterification results
acetic acid
stearic acid

A

acetic acid - sour smell
stearic acid - sweet fruity odor

91
Q

Special Tests for
Tartaric acid
Citric acid
Reagent

A

5% NaOH (sodium hydroxide)
0.1% KMNO4 (Potassium permanganate)

92
Q

Hydrolysis Reactions reagent
Acetic Anhydride
Acetamide

A

10% NaOH sodium hydroxide

93
Q

Hydrolysis Reactions reaction
Acetic Anhydride
Acetamide

A

Acetic Anhydride - blue litmus turned red
Acetamide -red litmus turned blue

Finals Org Chem (1 decks)

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