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Question
Consider the following organic compounds:
HCHO, C2H5OH, C2H6, CH3COOH, C2H5CI
Choose two compounds which can react in the presence of conc. H2SO4 to form an ester. Give the name and formula of the ester formed.
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Solution
C2H5OH (ethanol) and CH3COOH (ethanoic acid) are the compounds which can react with each other, in the presence of concentrated sulphuric acid, to form a sweet smelling ester called ethylethanoate. Its formula is CH3 -COO-CH2-CH3.
The chemical equation for the above reaction is as follows
`C_2 H_5 OH + CH_3 COOH` 
`CH_3 COOC_2 H_5 + H_2 O`
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\[\begin{array}{cc}
\ce{CH3}\\
|\\
\ce{CH3 -C -CH3}\\
|\\
\ce{CH3}
\end{array}\]
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