Which compound show the highest boiling point?
Correct answer: D. CH3COOH
- A. (CH4 - CH2)3 N
- B. C2H3OH
- C. C2H3 - O - C2H3
- D. CH3COOH
Explanation
Acetic acid (CH3COOH) has the highest boiling point among the compounds you mentioned. This is because acetic acid can form strong hydrogen bonds between its molecules. These hydrogen bonds require more energy to break, which leads to a higher boiling point compared to the other compounds. Essentially, the stronger the intermolecular forces, the higher the boiling point.
This question appeared on the KMU Centralized Admission Test 2020 paper, which you can sit online with every answer explained.
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About Reactivity of Carboxylic Acids
Carboxylic acids show acidic behaviour because their carboxylate ions are resonance-stabilised, and electron-withdrawing groups can change their strength. Reactions include neutralisation, esterification, formation of acid chlorides and amides, reduction, decarboxylation and substitution at the acyl carbon, which differs from the reactions of phenols.
Practise Carboxylic Acids
550 free Carboxylic Acids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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