Question

An example of Lewis acid - Lewis base reaction is:

• A. $BC{l}_3+C{l}^{-}\to {BC{l}_4}^{-}$
• B. $HCN+H_{2}O\to H_3{O}^{+}+C{N}^{-}$
• C. $H_2{O}_2+2B{r}^{-}+2H^{+}\to 2H_{2}O+B{r}_2$
• D. $2N{H}_3\left(g\right)\rightleftharpoons N_2\left(g\right)+3H_2\left(g\right)$

Answer 1

The correct option is A $BC{l}_3+C{l}^{-}\to {BC{l}_4}^{-}$

In the Lewis theory of acid-base reactions, basesdonate pairs of electrons and acids accept pairs of electrons. A Lewis acid is therefore any substance, such as the H⁺ ion, that can accept a pair of nonbonding electrons. In other words, a Lewis acid is an electron-pair acceptor. Hence option A.