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  4. Fats, on alkaline hydrolysis, gives

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Q. Fats, on alkaline hydrolysis, gives

VMMC MedicalVMMC Medical 2004

Solution:

Fats are esters of higher fatty acids with glycerol, hence on alkaline hydrolysis, they give back glycerol and sodium or potassium salt of acid (this is called soap). $ \underset{\begin{smallmatrix} C{{H}_{2}}OCOR \\ (fat) \end{smallmatrix}}{\mathop{\underset{|}{\mathop{\underset{\,\,\,\,\,\,CHOCOR\,+\,3NaOH\,\,\,\,\,\,\,\,\,\,\,\,\,\,\xrightarrow[{}]{{}}}{\mathop{\underset{|}{\mathop{C{{H}_{2}}OCOR}}\,}}\,}}\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, $ $ \underset{C{{H}_{2}}OH}{\mathop{\underset{|}{\mathop{\underset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,CHOH+\,\underset{(soap)}{\mathop{3\,RCOONa}}\,}{\mathop{\underset{|}{\mathop{C{{H}_{2}}OH}}\,}}\,}}\,}}\, $