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Question
While studying saponification reactions, the following comments were noted down by the students :
(I) Soap is a salt of fatty acids.
(II) The reaction mixture is basic in nature.
(III) In this reaction heat is absorbed.
(IV) This reaction is not a neutralisation reaction.
Which of these are the correct comments ?
(A) I and III only
(B) I, II and III
(C) II, III and IV
(D) I and II only
Solution
Soap is a salt of fatty acids and it's chemical formula is RCOO-Na+, where R denotes any long chain alkyl group having 12 to 18 carbon atoms.
The saponification reaction is exothermic in nature. In saponification reaction, the reaction mixture is basic in nature before the reaction, and can be basic after the reaction if NaOH is taken in excess.
Saponification reaction is not a neutralisation reaction. It does not involve formation of water molecule.
Hence, the correct option is D.
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