Question

In the reaction $I_2+I^{-}\to I_3^{-}$, the Lewis base is

• A. $I_3^{-}$
• B. $I_2$
• C. $I^{-}$
• D. None of the above

Answer 1

Answer: (C)

$I^{-}$

A Lewis Base is a species that can donate a pair of electrons to an electron acceptor. Here $I^{-}$ is giving electron pair to $I_2$ molecule. Therefore $I_2$ is a lewis acid and $I^{-}$ is a lewis base.