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2023 SEM 1 INORG & ORG CHEM > alcohols, phenols, thiols > Flashcards

alcohols, phenols, thiols Flashcards

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1
Q

Alcohol contain a ______ group

A

Hydroxy

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2
Q

Alcohols are bonded to a ____ hybridized carbon

A

Sp3

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3
Q

Alcohols are classified according to the number of alkyl groups attached to carbon bearing the _____

A

OH

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4
Q

Alcohols can be classified as

A

Primary
Secondary
Tertiary

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5
Q

What compounds that have a hydroxy group on a sp2 hybridized carbon

A

Enols and phenols

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6
Q

It is capable of intermolecular hydrogen bonding

A

Alcohols and phenols

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7
Q

Intermolecular hydrogen bonding have relatively ____ boiling points of these substances and the ____ of lower members of the series

A

High
Water solubility

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8
Q

Alcohols are soluble in

A

Organic solvents

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9
Q

An alcohol that is soluble in water

A

Low molecular weight alcohols (5 or less carbon)

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10
Q

An alcohol that is insoluble in water

A

Higher molecular weight alcohols (more than 5 carbons)

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11
Q

When an acid loses a proton, its ____ is formed.

A

conjugate base

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12
Q

When a base gains a proton, its____ is formed.

A

conjugate acid

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13
Q

The stronger the acid, the _____ is its conjugate base.

A

weaker

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14
Q

Amphoteric

A

Substance that can act as either an acid or a base

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15
Q

Substance that can act as an either acid or base

A

Amphoteric

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16
Q

Measure of the extent is dissociation of an acid

A

Acid ionization constant (Ka)

17
Q

It is the convenient scale for acid strength

A

pKa

18
Q

What is the formula of the pKa =

A

– log Ka

19
Q

The stronger the acid, the larger the ____ value and the smaller the ____ value

A

Larger the Ka value
Smaller the pKa value

20
Q

Identify the type of acids based on their pKa value:
pKa < 1

A

Very strong acids

21
Q

Identify the type of acids based on their pKa value:
pKa = 1-3

A

Moderately strong acids

22
Q

Identify the type of acids based on their pKa value:
pKa = 3-5

A

Weak acid

23
Q

Identify the type of acids based on their pKa value:
pKa = 5-15

A

Very weak acids

24
Q

Identify the type of acids based on their pKa value:
pKa > 15

A

Extremely weak acids

25
Q

Lewis definition:
A substance that can accept a pair of electrons

A

Lewis acid

26
Q

Lewis definition:
A substance that can donate a pair of electrons

A

Lewis base

27
Q

What is the pKa of alcohol

A

pKa 16-18

28
Q

It is a conjugate based of alcohols that are commonly used as strong organic base

A

Alkoxides

29
Q

Alkoxides are prepared from alcohols by reactions with…

A

Reactive metals (Na, K ) or metal hydrides (NaH, KH)

30
Q

It is produced by treating with NaOH since it is a stronger acid than alcohol

A

Phenoxide

2023 SEM 1 INORG & ORG CHEM (22 decks)

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