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प्रश्न
Write an equation showing saponification.
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उत्तर
On treating with sodium hydroxide, which is an alkali, the ester is converted back to alcohol and sodium salt of carboxylic acid. This reaction is known as saponification because it is used in the preparation of soap. Soaps are sodium or potassium salts of long chain carboxylic acid.
\[\ce{CH3COOC2H5->[NaoH]C2H5OH + CH3COONa}\]
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संबंधित प्रश्न
You have four test tubes, A, B, C and D containing sodium carbonate, sodium chloride, lime water and blue litmus solutions respectively. Out of these the material of which test tube/ test tubes would be suitable for the correct test of acetic/ethanoic acid?
(a) only A
(b) A and B
(c) B and C
(d) A and D
Identify the term or substance based on the descriptions given below
Ice like crystals formed on cooling an organic acid sufficiently.
What is the common name of methanol?
On adding acetic acid to sodium hydrogen carbonate in a test tube, a student observes
(A) no reaction
(B) a colourless gas with pungent smell
(C) bubbles of a colourless and odourless gas
(D) a strong smell of vinegar
Why is pure acetic acid also known as glacial acetic acid?
When acetaldehyde is oxidized with acidified potassium dichromate, it forms ______.
Rewrite the following statement by selecting the correct option.
The formula of ethanoic acid is _____________.
Ethanoic acid turns ______ litmus to ______
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
The reaction between acetic acid and sodium carbonate is shown in the following figure.
Answer the questions with the help of a diagram.
- Which gas does come out as effervescence in the big test tube?
- What is the colour change in the lime water present in the small test tube?
- Write the related reaction.
