The most acidic substance among the following is\

Question

Professor PC Thomas Classes · Answer

$\mathrm{B}(\mathrm{OH})_{3}$ is acidic due to electron deficiency. $$ \mathrm{B}(\mathrm{OH})_{3}+2 \mathrm{HOH} \rightarrow\left[\mathrm{~B}(\mathrm{OH})_{4}\right]^{-}+\mathrm{H}_{3} \mathrm{O}^{+} $$