Advertisements
Advertisements
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
Advertisements
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.
APPEARS IN
RELATED QUESTIONS
While studying saponification reaction, a student measures the temperature of the reaction mixture and also finds its nature using blue/red litmus paper. On the basis of his observations the correct conclusion would be
(A) the reaction is exothermic and the reaction mixture is acidic.
(B) the reaction is endothermic and the reaction mixture is acidic.
(C) the reaction is endothermic and the reaction mixture is basic.
(D) the reaction is exothermic and the reaction mixture is basic.
Complete the following chemical equations : C2H5OH + Na →
Complete the following equation:
`CH_3 COOH + CH_2 H_5 OH` 
What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4?
What will you observe when dilute ethanoic acid and dilute hydrochloric acid are put on universal indicator paper, one by one? What does it show?
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
Which compound is most likely to be sweet-smelling?
What do you observe when acetic acid is added to a neutral FeCl3 solution?
Anita added a drop each of diluted acetic acid and diluted hydrochloric acid on pH paper and compared the colors. Which of the following is the correct conclusion?
Reshu by mistake forgot to label the two test tubes containing Ethanol and Ethanoic acid. Suggest an experiment to identify the substances correctly? Illustrate the reactions with the help of chemical equations.
Give the balanced chemical equation of the reaction.
Oxidation of ethanol by acidified potassium dichromate.
