Question

The strongest bronsted base among the following anions is

• A. $ClO _{3}^-$
• B. $ClO ^{-}$
• C. $ClO _{4}^{-}$
• D. $ClO _{2}^-$

Answer 1

Answer: (B)

$ClO ^{-}$

Answer 2

Strongest acid among $HClO _{4}, HClO _{3}, HClO _{2}$ and $HClO$ is $HClO _{4}$ (due to greater no. of attached $O-$ atoms) and weakest is $HClO$. But the corresponding conjugate base of $HClO$ i.e. $ClO ^{-}$ is the strongest Bronsted base.