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Chemistry - AS Level > WM > Flashcards

WM Flashcards

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1
Q

Displayed formula of ethanoic acid

A
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2
Q

What is the name of this ester?

A

Methyl ethanoate

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3
Q

How are aldehydes produced?

A

From the oxidation and distillation of primary alcohols

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4
Q

Displayed formula of an aldehyde

A
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5
Q

How are ketones produced?

A

The oxidation of secondary alcohols with acidified potassium dichromate

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6
Q

What is the displayed formula of ketones?

A
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7
Q

What is the displayed formula for acid anhydrides?

A
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8
Q

What is the displayed formula for an ether?

A
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9
Q

What does a primary alcohol look like?

A

1 R group

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10
Q

What does a secondary alcohol look like?

A

2 R groups

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11
Q

How can phenols be indentified?

A

Add iron(III) chloride solution
Intense purple solution forms

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12
Q

Phenol + acid anhydride —> ?

A

Ester + carboxylic acid

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13
Q

What conditions are needed for esterification?

A

reflux
Concentrated sulfuric acid

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14
Q

What is the esterification reaction?

A

Alcohol + carboxylic acid —> ester + water

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15
Q

What is the equation for a primary alcohol being oxidised into an aldehyde?

A
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16
Q

What happens when an aldehyde is heated under reflux with potassium dichromate?

A

A carboxylic acids is formed

17
Q

What happens when a secondary alcohols are heated in the presence of acidified potassium dichromate?

A

Ketones are formed

18
Q

What happens to the potassium dichromate when it is used as an oxidising agent in the oxidation of alcohols?

A

It is reduced and turns from orange to green

19
Q

What colour is potassium dichromate in all of the types of alcohol?

A

Primary - green
Secondary - green
Tertiary - orange (not able to be oxidised)

20
Q

How can alkenes be formed?

A

Dehydration of alcohols
Heated under reflux
Concentrated sulfuric acid

21
Q

Diagram for reflux apparatus?

A
22
Q

What does the condenser do in the reflux apparatus?

A

Cause the vapour to condense and return to the flask for further heating

23
Q

What is used to separate liquids with different boiling points?

A

Distillation

24
Q

Diagram of distillation apparatus

A

Chemistry - AS Level (39 decks)

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