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ORG CHEM LAB > org chem lab > Flashcards

org chem lab Flashcards

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1
Q

What is the test for unsaturation?

A

Bromic Water Test (BR2), Bayer’s Test

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2
Q

What is the Test for Alcohols?

A

Lucas Test, Oxidation Test, Esterification, Chromic Acid Test, Iodoform, Acrolein Test

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3
Q

What are the Test for Carbonyl?

A

2,4-dinitrophenylhydrazine, Sodium Bisulfite

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4
Q

Positive result for Bromine Water Test

A

colorless product

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5
Q

Positive result for Bayers Test

A

Formation of brown ppt. and decolorizes pink color or KMnO4

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6
Q

Positive result for Lucas Test

A

Primary Alcohol: no change
Sec. Alcohol: Cloudy after 5 mins
Tert. Alcohol: Cloudy immediately

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7
Q

Positive result for Oxidation Test

A

Primary Alcohol: Orange to Green color
Sec. Alcohol: Orange to Green color
Tert. Alcohol: No color

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8
Q

Positive result for Esterification Test

A

Sweet and fruity smell

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9
Q

Positive result for Chromic Acid Test

A

Orange to green color

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10
Q

Positive result for Iodoform Test

A

Formation of pale yellow ppt. of iodorom or triiodomethane

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11
Q

Positive result for Acrolein Test

A

Pungent odor

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12
Q

Positive result for 2,4-dinitrophenylhydrazine Test

A

red-orange ppt.

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13
Q

Positive result for Sodium Bisulfite Test

A

Formation of water soluble crystalline

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14
Q

Positive result for Litmus Test?

A

Blue to Red litmus paper (Acidic)

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15
Q

Positive result for Sodium Bicarbonate Test

A

Formation of Brisk Effervesence

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16
Q

Positive result for Ester Test

A

Formation of ester or fruity smell

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17
Q

Positive result for Fischer Esterification

A

Formation of fruity smell

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18
Q

What is a hydrocarbon

A

Simplest organic compound

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19
Q

What kind of bond does a saturated hydrocarbon have

A

Sigma bond

20
Q

What kind of bond does a unsaturated hydrocarbon have

A

At least 1 pi bond

21
Q

Will SHC react with Halogens under high temp or exposure to UV light and is inert towards HCl, H2SO4, KMnO4 and Na2Cr2O7 at room temp?

A

Yes

22
Q

What kind of reaction does USH undergo?

A

Addition

23
Q

General Formula of Alcohols?

A

ROH

24
Q

Alcohols contains what kind of group?

A

hydroxyl group (OH)

25
Q

General formula of aldehyde?

A

RCOH

26
Q

General formula of ketone?

A

RCOR

27
Q

Electron density if C and O atom in carbonyl?

A

O atom higher, C atom lower

28
Q

Is carbonyl atom susceptible to nucleophilic attack?

A

Yes

29
Q

General formula of Carboxylic acid?

A

COOH

30
Q

Carboxylic acid undergo what kind of substitution?

A

Nucleophilic

31
Q

C and O atom develops what kind of charge in a Carboxylic Acid?

A

C atom partial positive, O atom partial negative

32
Q

Amines are derivatives of?

A

Ammonia

33
Q

Name of primary amine?

A

RNH2

34
Q

Name of secondary amine?

A

R2NH

35
Q

Name of tertiary amine?

A

R3N

36
Q

Can amines be aromatic or aliphatic or both?

A

Both

37
Q

Boiling point of amines is higher than? but lower than?

A

higher than alkanes, lower than alcohols

38
Q

Which amine has the highest boiling point?

A

Primary>Secondary>Tertiary

39
Q

How many C atoms in a Amine is soluble in water

A

1-6 C atoms

40
Q

What is formed when amine is neutralized by acid?

A

Amine salts

41
Q

What are the tests for Amines?

A

Reaction with Conc. HCl
Reaction w/ BR2
Hinsberg Test
Reaction with HNO2
Azo Dye

42
Q

Positive result for reaction with conc. HCl

A

yellow solids

43
Q

Positive result for Reaction with Bromine Water

A

Light brown solution with white ppt.

44
Q

Positive reaction for Hinsberg Test

A

w/ aniline: solidlike actual oil ppt.
w/ N methylaniline: solid ppt. insoluble
w/ N,N dimethylaniline: oily ins.

45
Q

Positive result for reaction with HNO2

A

w/ aniline: rust brown solution
w/ glycine: green solution

ORG CHEM LAB (2 decks)

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