Q. Which of the following carboxylate ions is the most stable?

 1603  201 Organic Chemistry – Some Basic Principles and Techniques Report Error

Solution:

Stability of carboxylate ion depends on two factors: Electronegativity of the halogen atom and number of halogen atoms attached. More the electronegativity of the halogen atom and more the number of halogen atoms more will be the dispersal of negative charge.