Alcohols Phenols And Ethers Question 36

Question: Fats, on alkaline hydrolysis, gives

[MH CET 2003]

Options:

A) Oils

B) Soaps

C) Detergents

D) Glycol + acid

Show Answer

Answer:

Correct Answer: B

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{Fat}{\mathop{\underset{CH_2OCOR}{\overset{CH_2OCOR}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}HOCOR\ }}}}}+3NaOH\to \underset{CH_2OH}{\overset{CH_2OH}{\mathop{\underset{|}{\overset{|}{\mathop{C}}}HOH\ }}}+\underset{\text{(Soap)}}{\mathop{3RCOONa}} $