Which one will act as a strong acid?
Correct answer: C. Trichloroethanoic acid
- A. Chloroethanoic acid
- B. Ethanoic acid
- C. Trichloroethanoic acid
- D. Dichloroethanoic acid
Explanation
Chloro groups cause an inductive effect(-I). i.e it is a withdrawing group because it is more electronegative than carbon to which it is attached. -Cl groups pull the bonded electrons from carbon and carbon in turn pulls the electron pair from hydrogen of -COOH group causing more electron deficiency on hydrogen. hydrogen becomes more partially positive hence more acidic. greater the withdrawing effect greater will be polarity and acidity. Since trichloro substituted acetic acid has greater no. of withdrawing groups (3 chloro groups)so it will be more polar and more acidic.
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?