1940709
Frage 1
Frage
There are two ways to make ethanol
Antworten
- True
- False
Frage 2
Frage
You can make ethanol by the dehydration of ethene and fermentation
Antworten
- True
- False
Frage 3
Frage
What catalyst is used during the hydration of ethene?
Antworten
-
Zymase
-
Phosphoric acid
-
Potassium dichromate
-
Sulphuric acid
Frage 4
Frage
What conditions are used during the hydration of ethene?
Antworten
-
25 degrees Celsius, 60 atmospheres
-
300 degrees Celsius, 100 atmospheres
-
300 degrees Celsius, 60 atmospheres
Frage 5
Frage
Is steam used in the presence of a catalyst during the hydration of ethene?
Antworten
- True
- False
Frage 6
Frage
Is the reaction of the hydration of ethene reversible?
Antworten
- True
- False
Frage 7
Frage
Is this the correct equation for the hydration of ethene?
H2C=CH2 + H2O ---> CH3CH2OH
Antworten
-
Yes
-
No
Frage 8
Frage
Fermentation is a method for manufacturing alcohol
Antworten
- True
- False
Frage 9
Frage
What catalyst is used during the fermentation of sugars to make ethanol?
Antworten
-
Phosphoric acid
-
Zymase
-
Sulphuric acid
Frage 10
Frage
What happens when temperatures exceed 37 degrees Celsius?
Antworten
-
The reaction happens at a faster rate
-
The enzyme denatures
-
The reaction stays at the same rate
Frage 11
Frage
Fermentation of sugars to ethanol is aerobic
Antworten
- True
- False
Frage 12
Frage
Temperatures in degrees Celsius during the reaction of fermentation can be
Antworten
-
27
-
40
-
37
-
30
-
24
-
25
Frage 13
Frage
It is important that fermentation is carried out with the absence of air. This is to prevent the oxidation of ethanol to undesired products, such as ethanal and ethanoic acid, which would affect the flavour of the product
Antworten
- True
- False
Frage 14
Frage
The equation for fermentation is
C6H12O6 ----> 2CH3CH2OH + 2CO2
Antworten
- True
- False
Frage 15
Frage
What are the conditions and catalyst used during fermentation?
Antworten
-
300 degrees Celsius
-
37 degrees Celsius
-
Phosphoric acid
-
Zymase
Frage 16
Frage
_________ is the ease that a liquid turns into a gas
Antworten
-
Physical properties
-
Volatility
-
A bond
-
Polarity
Frage 17
Frage
Volatility increases as boiling point increases
Antworten
- True
- False
Frage 18
Frage
Why do alcohols dissolve in water?
Antworten
-
Hydrogen bonds form between the polar -O-H groups of the alcohol and water molecules
-
Hydrogen bonds form between the non-polar -O-H groups of the alcohol and water molecules
-
No bonds form between the alcohol and water molecules which allows the alcohol to dissolve
Frage 19
Frage
Select the correct statement
Antworten
-
Solubility decreases as chain length increases
-
Solubility decreases as chain length decreases
Frage 20
Antworten
-
Primary
-
Secondary
-
Tertiary
Frage 21
Antworten
-
Primary
-
Secondary
-
Tertiary
Frage 22
Antworten
-
Primary
-
Secondary
-
Tertiary
Frage 23
Frage
Which types of alchohols can be oxidised using an oxidising agent?
Antworten
-
Primary and tertiary
-
Secondary and tertiary
-
Primary and secondary
-
Primary, secondary and tertiary
Frage 24
Frage
What does this symbol represent? [O]
Antworten
-
Oxidising agent
-
Reflux
Frage 25
Frage
A primary alcohol reacts under reflux with acidified potassium dichromate to produce
Antworten
-
Ketone
-
Carboxylic acid
-
Aldehyde
Frage 26
Frage
A primary alcohol reacts on gentle heating to produce
Antworten
-
Aldehyde
-
Carboxylic acid
Frage 27
Frage
A secondary alcohol reacts under reflux to form
Antworten
-
Nothing, it doesn't react
-
A ketone
-
An aldehyde
-
A carboxylic acid
Frage 28
Frage
Tertiary alcohols react under reflux to form
Antworten
-
A ketone
-
Nothing, it doesn't react as tertiary alcohols are resistant to oxidation
-
A carboxylic acid
-
An aldehyde
Frage 29
Antworten
-
A ketone
-
A carboxylic acid
-
An aldehyde
Frage 30
Antworten
-
A carboxylic acid
-
A ketone
-
An aldehyde
Frage 31
Antworten
-
An aldehyde
-
A carboxylic acid
-
A ketone
Frage 32
Frage
Esterification is the reaction of
Antworten
-
An alcohol and a ketone to produce an ester and water
-
An alcohol and a carboxylic acid to produce an ester and water
-
An alcohol and an aldehyde to produce an ester and water
Frage 33
Frage
Concentrated sulfuric acid is used as the catalyst in an esterification reaction
Antworten
- True
- False
Frage 34
Frage
What is broken and formed during an esterification reaction?
Antworten
-
the O-H bond in the alchohol is broken and water is formed
-
The =O bond in the alcohol is broken and water is formed
Frage 35
Frage
Propanoic acid and methanol reacts to form
Antworten
-
Propyl methanoate
-
Methyl propanoate
Frage 36
Frage
An alcohol can be dehydrated to form an alkene in the presence of an acid catalyst
Antworten
- True
- False
Frage 37
Frage
The dehydration of an alcohol is an example of what kind of reaction?
Antworten
-
Substitution
-
Elimination
-
Nucleophilic
Frage 38
Frage
In an elimination reaction
Antworten
-
2 molecules ---> 1 molecule
-
1 molecule ---> 2 molecules
Frage 39
Frage
Select the suitable acid catalysts for the dehydration of an alcohol
Antworten
-
Concentrated phosphoric acid
-
Concentrated sulfuric acid
-
Zymase
-
Oxygen
-
Acidified potassium dichromate
Frage 40
Frage
Dehydration is an elimination reaction in which water is removed from a saturated molecule to make an unsaturated molecule
Antworten
- True
- False
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