Organic acids and esters
1 Ethanoic acid is an organic acid
and a member of a homologous series with the general formula RCOOH.
a What is the name of this series?
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b What is the functional group of
the series?
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c Ethanoic acid is a weak acid. What
does the term ‘weak acid’ mean? Give an equation to help explain what is meant.
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d Draw the structural formula of the
next member of the series, propanoic acid.
2 a Ethanoic acid reacts with ethanol in the
presence of a few drops of concentrated sulfuric acid to form a sweet-smelling compound.
i Name the organic compound formed.
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ii What type of compound is this?
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iii The
reaction is reversible. Write an equation for the reaction.
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iv What is the function of the
sulfuric acid?
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v What two compounds would you react
together to obtain methyl propanoate?
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