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Higher Chemistry > UNIT 2 : Alcohol Reactions > Flashcards

UNIT 2 : Alcohol Reactions Flashcards

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1
Q

What are the 3 types of alcohol?

A

Primary
Secondary
Tertiary

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2
Q

What are primary alcohols?

A

Ones in which the carbon attached to the hydroxyl group is attached to only one carbon atom

eg. butan-1-ol

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3
Q

What are secondary alcohols?

A

Ones in which the carbon attached to the hydroxyl group is attached to two carbon atoms

eg. propan-2-ol

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4
Q

What are tertiary alcohols?

A

Ones in which the carbon attached to the hydroxyl group is attached to three carbon atoms

eg. 3-methylpentan-3-ol

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5
Q

What are the 3 oxidising agents?

A

Acidified Potassium Dichromate
Fehling’s Solution
Tollens’ Reagent

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6
Q

What effect is seen when Acidified Potassium Dichromate is added to alcohol?

A

A change of orange dichromate ions, to blue-green chromium (III) ions

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7
Q

What effect is seen when Fehling’s Solution is added to alcohol?

A

A change of blue Cu2+ ions, to orange-red Cu+ ions

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8
Q

What effect is seen when Tollens’ Reagent is added to alcohol?

A

A change of Ag+ ions to Ag solid (solid silver) ions which make a shiny coating on the inside of the boiling tube

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9
Q

What type of reaction is the reaction of oxidising agents and alcohol?

A

Reduction

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10
Q

Which oxidising agent gives the “Silver Mirror Test”?

A

Tollens’ Reagent

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11
Q

What is produced on the oxidation of a primary alcohol?

A

An aldehyde

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12
Q

Which alcohol can undergo further oxidation?

A

Primary

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13
Q

What is produced on the further oxidation of a primary alcohol?

A

A carboxylic acid

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14
Q

What is produced on the oxidation of a secondary alcohol?

A

A ketone

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15
Q

What is the functional group of a ketone?

A

Carbonyl Group in the middle of a carbon chain, not the end

R1
 |
C = O
 |
R2
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16
Q

What alcohols do not undergo oxidation?

A

Tertiary

17
Q

What is significant about the fact that these are oxidation reactions?

A

They work backwards as reduction reactions

18
Q

What happens to the oxygen to hydrogen ratio when oxidation is applied to carbon compounds?

A

It increases

19
Q

What is the functional group of an aldehyde?

A

Carbonyl Group at the end of a carbon chain

R
 |
C = O
 |
H
20
Q

What happens when we try to oxidise a ketone?

A

It does not react with mild oxidising agents

Higher Chemistry (9 decks)

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