The weakest carboxylic acid:
Correct answer: B. CH3CH2COOH
- A. HCOOH
- B. CH3CH2COOH
- C. CH3COOH
- D. ClCH2COOH
Explanation
The weakest carboxylic acid is indeed option (B) CH3CH2COOH, also known as propanoic acid. This is because it has an alkyl group (ethyl group) attached to the carboxyl group, which has a slight electron-donating effect (+I effect). This slightly destabilizes the carboxylic acid, making it weaker compared to the other options.
Last updated
About Carboxylic Acids
Carboxylic acids are named and studied through the combined effects of the carbonyl and hydroxyl groups, their preparation, acidity and hydrogen bonding. Reactions include neutralisation, esterification, reduction and conversion into acid chlorides, anhydrides, esters and amides, with emphasis on how these derivatives interconvert.
Practise Carboxylic Acids
550 free Carboxylic Acids MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2-hydroxy propanoic acid is also called _ ?
2CH3,COOH+xCa→ Ca (OCOCH3)2 +H2O. Calculate value of "x".
2CH3COOH+ xCa→ Ca (CH3COO)2 +H2.Calculate value of "x".
A carboxylic acid contains:
A compound has the properties below:it is a liquid at room temperature,it is immiscible with water,it does not decolourise acidified potassium manganate(VII).What could it be?