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Chemistry > Alcohols and Carboxylic Acids > Flashcards

Alcohols and Carboxylic Acids Flashcards

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1
Q

What does the empirical formula show

A

The simples ratio from carbons to hydrogens

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2
Q

Are alkanes saturated or unsaturated

A

Saturated - No double bonds

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3
Q

Define an Isomer

A

Same molecular formula but different displayed formula

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4
Q

What happens in a addition reaction

A

Bromine breaks the double bond and hangs on at the bottom

ALKENE

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5
Q

What happens in a substation reaction

A

One bromine replaces the hydrogen
The replaced hydrogen joins to the other bromine

UV LIGHT!!!
ALKANE!!!

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6
Q

What colour happens in addition collar wise with alkenes and alkanes

A

Alkenes - bromine water turns colourless

Alkanes - bromine water stays orange

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7
Q

What is the structural and displayed formula of methanol

A

H
H-C-O-H
H

CH3OH

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8
Q

What is the functional group of alcohols

A

-OH

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9
Q

What happens to the boiling point the bigger the alcohol

A

Chains get bigger = bigger surface area = more intermolecular forces

Therefore more energy to overcome

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10
Q

Give the structural formula of propanol

A

CH3CH2CH2OH

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11
Q

Give the name -

CH3COOH

A

Ethanoic acid

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12
Q

Draw the displayed formula of Propanoic acid

A

……H..H…O
H - C -C - C
……..H…H..OH

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13
Q

Give the structural formula of ethanoic acid

A

CH3COOH

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14
Q

Give 3 essentials in making ethanol by the hydration of ethene

A

Catalyst - Phosphoric Acid
Temperature - 300˚C
Pressure - 60-70 atm

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15
Q

Give the word equation of the hydration of ethene

A

ethene + water = ethanol

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16
Q

Is the hydration of ethene pure or impure

A

Pure

17
Q

Is the hydration of ethene a continuous or batch process

A

Continuous

18
Q

Is the hydration of ethene, describe the rate of reaction

A

Fast

19
Q

What is fermentation

A

Conversion of sugar into ethanol by the enzymes in yeast

Process at 30˚C so as to not to denature the enzymes

Done in the absence of air (anaerobic reparation)

20
Q

Give the word equation in fermentation

A

Glucose = ethanol + carbon dioxide

21
Q

Give the advantages of the hydration method

A

Fast
Pure
Cheaper
Continuous

22
Q

Give the advantages of fermentation

A

Renewable

Can be done on a small scale

23
Q

Give the disadvantages of the hydration of ethene

A

Non-renewable

Large factory and infrastructure required

24
Q

Give the disadvantages of fermentation

A

Slow
Impure
More expensive

25
Q

Give 3 ways in which alcohols can be oxidised

A

Combustion
Microbal oxidation
Heating with Potassium Dichromate

26
Q

Give the word equation with ethanol

A

Ethanol + Oxygen = carbon dioxide + water

27
Q

Describe what happens in oxidation by microbial

A

The ethanol in the wine is oxidised by the air with the help of micro-organisms such as bacteria or yeast to form ethanoic acid

28
Q

What colour is Potassium Dichromate

A

Orange

29
Q

What colour does Potassium Dichromate when added to ethanol

A

Green

30
Q

Give the chemical equation for the reaction of ethanol with potassium Dichromate

A

CH3CH2OH + 2(O) = CH3COOH + H2O

31
Q

Metal + acid =

A

Salt + Hydrogen

32
Q

Carboxylic acids are………acids

A

Weak

33
Q

Lithium + ethanoic acid =

Li + CH3COOH =

A

Lithium ethanoate + hydrogen

CH3OOLi + H2

34
Q

Give the chemical equation between Propanoic acid and Strontium Oxide

A

CH3CH2COOH + SRO = (CH3CH2COO)2SR + H2O

35
Q

Whats an ester

A

Formed when an alcohol reacts with a carboxylic acid

36
Q

What is the functional group of alkenes

A

C=C

37
Q

What is the functional group of Alcohols

A

-OH

38
Q

What is the functional group of Carboxylic acids

A

COOH

39
Q

What is the functional group of Esters

A

O
=
-O-C-C

Chemistry (20 decks)

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