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  4. Ethyl methyl ketone is obtained by heating calcium salts of

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Q. Ethyl methyl ketone is obtained by heating calcium salts of

MHT CETMHT CET 2010Aldehydes Ketones and Carboxylic Acids

Solution:

26. Ethyl methyl ketone is an unsymmetric ketone, so two different acids (in the form of calcium salt) are used. The structure of ethyl methyl ketone is

$C _{2} H _{5} COCH _{3}$

The structure shows the presence of 4 carbon atoms, thus the calcium salts must be of acetic acid and propionic acid to form $C _{2} H _{5} COCH _{3}$.

$\left( C _{2} H _{5} COO \right)_{2} Ca +\left( CH _{3} COO \right)_{2} Ca \stackrel{\text { Distill }}{\longrightarrow }$
$C _{2} H _{5} COCH _{3}+ CaCO _{3}$