Why is chloroethanoic acid, ClCH2COOH a stronger acid than ethanoic acid?
Correct answer: D. Chlorine withdraws electron and stabilizes the ClCH2COO- anion
- A. Chlorine releases electrons and destabilizes ClCH2COO- anion
- B. Chlorine releases electrons and stabilizes the ClCH2COO- anion
- C. Chlorine withdraws electrons destabilizes ClCH2COO- anion
- D. Chlorine withdraws electron and stabilizes the ClCH2COO- anion
Explanation
The general equation is: HA--> H++A- When A- formed is more stable, the equlibrium lies more to the right.More HA dissociates and hence it is a stronger acid. The presence of Cl withdraws the negative charge by Inductive effect since Cl is electronegative. This disperses the negative charge and hence stabilizes the anion.
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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.
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