Acetic Acid Organic Chemistry Concise Class-10 Exe-12F Selina ICSE Solutions Ch-12. We Provide Step by Step Answer of Acetic Acid Questions in organic Chemistry for ICSE Class-10. The given Solutions is according to the Latest editions. Visit official Website CISCE for detail information about ICSE Board Class-10.

Acetic Acid Organic Chemistry Concise Class-10 Exe-12F Selina ICSE Solutions Chapter-12

Board	ICSE
Book / Publication	Concise / Selina
Subject	Chemistry
Class	10th
Writer	Dr SP Singh
Chapter-12	Organic Chemistry
Exe-12F	Acetic Acid
Edition	2025-2026

Questions on Acetic Acid in Organic Chemistry

Acetic Acid Organic Chemistry Concise Class-10 Exe-12F Selina ICSE Solutions Ch-12

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Que-1: What are carboxylic acids? Give their general formula?

Ans: An organic compound containing the carboxyl group(COOH) is known as carboxylic acid.
The general formula: C_nH_2n+1COOH

Que-2: Write the names of:

(a) first three members of carboxylic acid series.
(b) three compounds which can be oxidised directly, or in stages to produce acetic acid.

Ans: 
(a) First three members of carboxylic acids are:
Methanoic acid
Ethanoic acid
Propanoic acid
(b) Three compounds that can be oxidized directly or in stages to produce acetic acid are:
Ethanol
Acetylene
Ethanal

Que-3: 

(a) Give the structural formulae of acetic acid.
(b) IUPAC name of acetic acid.
(c) What is glacial acetic acid?

Ans: 
(a) Structural formula of acetic acid:

(b) IUPAC name of acetic acid is: Ethanoic acid
(c) Glacial acetic acid is the pure form of acetic acid. It does not contain water.

Que-4: Vinegar is greyish in colour with particular taste. Explain.

Ans: Vinegar commonly called Sirka is a dilute solution of acetic acid. The presence of colouring matter gives it a greyish colour while the presence of some other organic acids and organic compounds impart it the usual taste and flavour.

Que-5: Complete:

(a) Vinegar is prepared by the bacterial oxidation of ______.
(b) The organic acid present in vinegar is __________.
(c) The next higher homologue of Ethanoic acid is ______.

Ans: 
(a) Ethanol
(b) Acetic acid
(c) Propanoic acid

Que-6: How is acetic acid prepared from

(a) ethanol
(b) acetylene?

Ans: 
(a)It is prepared in the lab by the oxidation of ethanol with acidified potassium dichromate.
C₂H₅OH   → [O]   CH₃CHO  → [O]   CH₃COOH
(b)Acetylene is first converted to acetaldehyde by passing through 40% H₂SO₄ at 60°C in the presence of 1% HgSO₄.
The acetaldehyde is then oxidised to acetic acid in the presence of catalyst manganous acetate at 70°C.
C₂H₂  + H₂O  →     CH₃CHO
CH₃CHO + O₂    →    2CH₃COOH

Que-7: What do you notice when acetic acid reacts with

(a) Litmus
(b) Metals
(c) Alkalies
(d) alcohol

Ans: 
(a) When acetic acid reacts with litmus it turns blue litmus red.
(b) When acetic acid reacts with metals hydrogen is evolved.
2CH₃COOH + Zn    →   (CH₃COO)₂Zn + H₂
(c) When acetic acid reacts with alkalies it forms salt
CH₃COOH + NaOH   →        CH₃COONa + H₂O
(d) Acetic acid reacts with alcohols forming esters
CH₃COOH + C₂H₅OH  →   (H₂SO₄)    CH₃COOC₂H₅ + H₂O

Que-8: Acetic acid is a typical acid. Write the equation in each case for its reaction with

(a) Metal
(b) A base/alkali
(c) A carbonate
(d) A bicarbonate

Ans: 
(a) 2CH₃COOH + Zn  →      (CH₃COO)₂Zn + H₂
(b) CH₃COOH + NaOH    →    CH₃COONa + H₂O
(c) 2CH₃COOH + Na₂CO₃  →       2CH₃COONa +H₂O+ CO₂
(d) CH₃COOH + NaHCO₃    →    CH₃COONa + H₂O +CO₂

Que-9: What do you observe when acetic acid is added to:

(a) Sodium bicarbonate
(b) Ethyl alcohol in the presence of sulphuric acid
(c) Neutral FeCl₃ solution

Ans: 
(a) When acetic acid is added to sodium bicarbonate, carbondioxide is liberated.
CH₃COOH + NaHCO₃    →    CH₃COONa + H₂O +CO₂
(b) When acetic acid is added to ethyl alcohol in presence of sulphuric acid ester (ethyl acetate) is formed.
CH₃COOH + C₂H₅OH    CH₃       →   (H₂SO₄)    COOC₂H₅ + H₂O
(c) When acetic acid is added to neutral FeCl₃, wine red color is produced.

Que-10: Name :

(a) Compound formed when acetic acid and ethanol react together
(b) Reducing agent used to convert acetic acid into ethanol
(c) Substance used to change acetic acid to acetic anhydride

Ans: 
(a) When acetic acid and ethanol react it results in the formation of ethyl acetate.
(b) Lithium aluminum hydride(LiAlH₄) is used to convert acetic acid to ethanol.
(c) Phosphorous pentoxide(P₂O₅) is heated along with acetic acid to form acetic anhydride.

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