Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q10 (CAPF/2018) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Organic chemistry basics Answer Verified

Which of the following statements about carboxylic acids is/arc correct? 1. Simple aliphatic carboxylic acids are soluble in water. 2. Higher carboxylic acids are practically insoluble in water, 3. The acidity of a carboxylic acid depends on the number of carbon atoms present in the hydrocarbon chain. Select the correct answer using the code given below,

Result
Your answer: —  ·  Correct: D
Explanation

The correct answer is Option 4 (1, 2 and 3) because all three statements accurately describe the physical and chemical properties of carboxylic acids.

  • Statement 1: Simple aliphatic carboxylic acids (up to four carbon atoms) are soluble in water. This is due to their ability to form strong intermolecular hydrogen bonds with water molecules.
  • Statement 2: Solubility decreases as the hydrocarbon chain length increases. Higher carboxylic acids are practically insoluble because the hydrophobic nature of the long non-polar alkyl chain outweighs the hydrophilic nature of the carboxyl group.
  • Statement 3: The acidity is influenced by the hydrocarbon chain. Alkyl groups exert an inductive effect (+I effect); as the chain length or branching increases, electron density is pushed toward the carboxyl group, destabilizing the carboxylate ion and slightly weakening the acid compared to formic acid.

Since all statements are scientifically valid, Option 4 is the most comprehensive choice.

How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
40%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

CDS-I · 2023 · Q94 Relevance score: 2.15

Consider the following statements: While diluting concentrated nitric acid solution 1. the concentration of [H₃O⁺] ions/volume increases 2. water must be added slowly to concentrated acid 3. acid must be added slowly to water Which of the statements given above is/are correct?

CDS-II · 2021 · Q25 Relevance score: 1.86

Which of the following statements is/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste and corrosive in nature. Select the correct answer using the code given below :

CDS-II · 2023 · Q38 Relevance score: 1.39

Which one of the following statements regarding acids is not correct?

CDS-I · 2002 · Q82 Relevance score: 0.93

With reference to human body, which one of the following statements is correct?

NDA-I · 2013 · Q38 Relevance score: 0.88

Which of the following statements in connection with the properties of water is/are correct? 1. Water has higher specific heat in comparison with other liquid. 2. Water has no dipole moment. 3. Water has low heat of vaporization. Select the correct answer using the code given below.