the reaction between CV+ and -OH, is CV+ lewis acid and OH lewis base

And the question is?

Yes, in the reaction between CV+ and -OH, CV+ acts as a Lewis acid, and -OH acts as a Lewis base.

To understand why CV+ is a Lewis acid and -OH is a Lewis base, we need to look at the definitions of Lewis acids and bases.

Lewis acid: A Lewis acid is a species that can accept a pair of electrons. It typically has an electron-deficient atom, which can form a coordinate bond by accepting a lone pair of electrons from a Lewis base.

Lewis base: A Lewis base is a species that can donate a pair of electrons. It typically has a lone pair of electrons that it can contribute to the formation of a coordinate bond with a Lewis acid.

In the case of CV+ (also known as cerium(IV) cation), the Ce atom has a +4 charge, which means it has a strong electrostatic attraction for electrons. This electron-deficient nature of the Ce atom allows it to act as a Lewis acid by accepting a pair of electrons from a Lewis base.

On the other hand, -OH (a hydroxide ion) has a lone pair of electrons on the oxygen atom. This lone pair can donate an electron pair to form a coordinate bond with the Lewis acid. Therefore, -OH acts as a Lewis base by donating its lone pair of electrons to CV+.

So, the reaction between CV+ and -OH involves the Lewis acid-base interaction, where CV+ acts as the Lewis acid by accepting the lone pair of electrons from the Lewis base -OH.