Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Chemistry Class 12 > Alcohols, Phenols, Ethers > Flashcards

Alcohols, Phenols, Ethers Flashcards

1
Q

Propane-1,2,3 triol is called

A

Glycerol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Alcohols from hydroboration

A

Ch3-Ch=Ch2 + BH3 –> (Ch3-Ch2-Ch2)3B + H2O –> 2Ch3-Ch2-Ch2OH + B(OH)3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which reagent gives 1° alcohol

A

LiAlH4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

E’ withdrawing group ____ acid strength on phenol

A

Increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Acid strength increases when K(A)

A

Increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

When pK(a) = -logK(a) is more, acid strength

A

Decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Cresol has

A

Ch3 on phenol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Ethane 1,2-diol

A

Ethylene glycol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Ethene to ethanol

A

H2O(H+)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Methanal gives

A

1° alc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Ketones with gridnard give

A

3° alc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

All other aldehydes give

A

2° alc

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Ch3MgBr to 2-methyl propan-2-ol

A

Propanone or acetone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Propene + H20

A

Propan2ol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Propene + h2O2

A

Propanol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Reducing agents that form 1° alc eg:

A

LiAlH4, NaBH4 and Na in C2H5OH

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which reagent only will reduce COOH to alc?

A

LiAlH4

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Prep of phenols

A

Chlorobenzene
Benzene sulphonic acid
Diazonium chloride
Cumene

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Chlorobenzene to phenol

A

Aq. NaOH + HCl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Benzene sulphonic acid to phenol

A

Benzene + H2SO4 + NaOH + 2NaOH(-Na2SO3) + HCl

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Diazonium chloride to phenol

A

H20(heat)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Cumene to phenol

A

O2 + H2O(H+)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

ROH + NaOH

A

No rn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

2ROH + 2Na

A

2RONa + H2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Why is phenol more acidic than alcohols?
Due to acidic nature: phenoxide ion formed by release of proton is stable due to resonance. But in alc, alkoxide ion isn't stable
26
Pyridine is a ___ and it ___ the product
Base; removes
27
C6H5COOCH3 is called
Methyl benzoate
28
Aspirin is obtained by
Esterification
29
2hydroxybenzoic acid + acid anhydride
Asirin(2 acetoxybenzoic acid) + CH3COOH
30
RCh2OH to RCh2Cl
HCl(ZnCl2)
31
Luca's reagent
Conc hcl + zncl2
32
Ethanol to ethene
Dehydration by conc H2SO4(443K)
33
2° alc to propene
85% h3po4(440K)
34
3° alc to 2methylpropene
20% h3po4(358K)
35
Ethanol to acetaldehyde
CrO3
36
Can ketones oxidize to give carboxylic acid?
No, cuz there's no H present on ketones
37
3° alc shows no reaction to oxidation as
There's no H present for removal
38
3°alc + Cu/300°C gives
Alkene due to dehydration
39
Salicylic acid to aspirin
acid anhydride/ pyridine
40
3° alc + H+ gives
alkene due to dehydration
41
Ethanol to ethene
H+
42
Chlorobenzene to phenol
NaOH(high temp, press) + HCl
43
Benzene sulphonic acid to benzene
NaOH/H+
44
Benzene to phenol-
conc H2SO4 to Benzene sulphonic acid + NaOH/H+
45
Aniline to phenol
NaNO2/HCl is diazonium + H2O(warm)
46
Cumene to phenol
O2 to cumene peroxide + H2O
47
Solubility decreases as
alkyl group size increases
48
Acidity order(desc)
POM-phenol
49
Acidity order for alcohols
1°>2°>3° alc
50
Phenol to 2,4,6-tribromophenol
Bromine water(3Br2)
51
Phenol to o-bromo & p-bromo phenol
Br2 in CS2(273K)
52
Phenol to o-nitro & p-nitro phenol
Dil.HNO3(288K)
53
Main product in nitration of phenol?why?
O-nitrophenol due to intramolecular H bond
54
Phenol + conc.HNO3
2,4,6-trinitrophenol
55
Fridelcrafts' acylation for phenol
Phenol + Ch3cocl(alcl3 excess) gives Coch3 at p- position of phenol
56
Kolbe's reaction
Phenol + NaOH + CO2 + dil HCl gives salcylic acid
57
Reimer tiemann
Phenol + NaOH + chcl3(358K) + 2NaOH + dil HCl gives salicylaldehyde)
58
Phenol to benzene
Zn
59
ethanol to diethylether
H2SO4(413K)
60
°1 alc gives
Ethers
61
2° and 3° alc will give
Ether as minor product and alkene as major product. Alkene due to dehydration
62
Williamson's synthesis
R-ONa + RX gives ROR + NaX
63
Alc have > BP than ether due to
Intermolecular H bond
64
To form ether, the halogen should be attached to
Smaller alkyl group
65
Ethoxybenzene from Williamson's
C6H5ONa + C2H5Br
66
Propoxypropene from william's
Ch3ch2ch2ONa + ch3ch2ch2br
67
Which alcohol will react with Luca's reagent fastest to give turbidity?
3°>2>1

Chemistry Class 12 (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions