Exam code: 5070
Coal gas is made by heating coal in the absence of air. The list shows the main gases present in coal gas.
carbon dioxide
carbon monoxide
ethene
hydrogen
methane
nitrogen
Which one of these gases is an alkane?
Draw the structure of a molecule of ethene. Show all of the atoms and all of the bonds.
Give the structural formula of ethene.
Name the alkane that contains two carbon atoms.
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Choose from the following organic compounds to answer the questions.
butane
but-2-ene
butanoic acid
methanoic acid
methanol
propan-2-ol
propane
propene
Each compound can be used once, more than once or not at all.
Name the alkane that contains three carbon atoms.
Name the alkene that contains four carbon atoms.
Name the alcohol that contains one carbon atom.
Name the carboxylic acid that contains four carbon atoms.
Name the alcohol that contains three carbon atoms.
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A chemical company separates petroleum by fractional distillation and uses the fractions to make other organic compounds.
The formulae of four of these compounds are shown.
C3H8 C4H8 C3H7OH CH3COOH
State the type of compound present for C3H8 and for C4H8.
State the type of compound present for C3H7OH and for CH3COOH.
Name the compound with the molecular formula C3H8.
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Table 1.1 shows information about four organic compounds.
Table 1.1
name | structural formula | boiling point / °C |
|---|---|---|
methanol | CH3OH | 65 |
CH3CH2OH | 78 | |
propan-1-ol | CH3CH2CH2OH | 97 |
CH3CH2CH2CH2OH | 118 |
Name the two compounds that are missing from Table 1.1.
State the type of compound that all four compounds in Table 1.1 are.
State the ending that all four of their names share.
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The displayed formulae of two organic compounds, A and B, are shown.
Name compound A.
Name compound B.
Give the structural formula of compound B.
Name the compound that belongs to the same homologous series as compound B and contains one fewer carbon atom.
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Table 1.1 gives information about four organic compounds.
Table 1.1
name | structural formula | type of compound |
|---|---|---|
butane | alkane | |
propan-2-ol | ||
CH3COOH | carboxylic acid | |
methyl ethanoate | CH3COOCH3 |
Complete Table 1.1.
Methyl ethanoate is made by reacting an alcohol with a carboxylic acid.
Name the alcohol used.
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The displayed formula of compound A is shown.
Name compound A.
Explain why the name of compound A has to contain a number.
Draw the displayed formula of the other unbranched alkene that contains four carbon atoms.
Show all of the atoms and all of the bonds.
Name the compound you have drawn.
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The carboxylic acids form a homologous series.
Draw the displayed formula of methanoic acid.
Show all of the atoms and all of the bonds.
Draw the displayed formula of butanoic acid.
Show all of the atoms and all of the bonds.
Give the structural formula of propanoic acid.
Name the carboxylic acid that contains two carbon atoms.
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Esters are used as food flavourings and as solvents.
An ester is made by warming propan-1-ol with ethanoic acid in the presence of an acid catalyst.
Name the ester made.
Draw the displayed formula of the ester made.
Show all of the atoms and all of the bonds.
Name the other product of this reaction.
Name the ester made when methanol reacts with propanoic acid.
Name the ester made when ethanol reacts with methanoic acid.
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Ethane reacts with chlorine in the presence of ultraviolet light.
In one reaction, a single hydrogen atom in an ethane molecule is replaced by a chlorine atom.
Name the organic product of this reaction.
Draw the displayed formula of this product.
Show all of the atoms and all of the bonds.
Methane also reacts with chlorine in the presence of ultraviolet light.
In this reaction, one hydrogen atom in a methane molecule is replaced by a chlorine atom.
Name the organic product.
Give the structural formula of this product.
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Fig. 1.1 is a flow diagram showing some reactions of an organic compound A.
Fig. 1.1
Name compound A.
Draw the displayed formula of the other unbranched alcohol that is a structural isomer of compound A.
Show all of the atoms and all of the bonds.
Name ester B.
Draw the displayed formula of ester B.
Show all of the atoms and all of the bonds.
Butanoic acid reacts with magnesium to form compound D and gas E.
Name compound D.
Name gas E.
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The displayed formula of an ester is shown.
Name this ester.
Name the alcohol and the carboxylic acid that react together to make this ester.
Draw the displayed formula of the alcohol used.
Show all of the atoms and all of the bonds.
Draw the displayed formula of the carboxylic acid used.
Show all of the atoms and all of the bonds.
Explain how the number of carbon atoms on the carboxylic acid side of this ester is worked out from its displayed formula.
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A student is asked to draw the displayed formula of butan-1-ol.
The student's answer is shown.
The student's answer contains three mistakes.
Identify each mistake.
Draw the correct displayed formula of butan-1-ol.
Show all of the atoms and all of the bonds.
Give the structural formula of butan-1-ol.
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An ester called butyl ethanoate is used as a food flavouring.
Name the alcohol and the carboxylic acid that react together to make butyl ethanoate.
Draw the displayed formula of the carboxylic acid used.
Show all of the atoms and all of the bonds.
Name the ester made when the same alcohol reacts with methanoic acid instead.
Explain how the name of an ester shows which alcohol and which carboxylic acid were used to make it.
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But-1-ene reacts with bromine.
Name the organic product of this reaction.
Draw the displayed formula of this product.
Show all of the atoms and all of the bonds.
Explain why this product is not named 1,1-dibromobutane.
But-2-ene also reacts with bromine.
Name the organic product of this reaction.
Explain why its name is different from your answer to part (a).
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