Lewis vs. Bronsted Acids and Bases

[Jessa Maheras 4F]

Can someone explain the difference between Lewis and Bronsted acids and bases? Thank you!

[madijohnson_4A]

A Lewis acid is an electron pair acceptor, and a Lewis base is an electron pair donor.
A Bronsted acid gives up an H+ (proton donor), and a Bronsted base receives an H+ (proton acceptor).

[madawy]

The Bronsted-Lowry theory talks about removal or transfer of hydrogen ions (H+) ie. protons where as the Lewis theory talks about donation or acceptance of electron pairs. A Brønsted–Lowry acid is a chemical species being able to donate a hydrogen cation, H+. Obviously, it needs another chemical species ( a bronsted-lowry base) to accept the transferred hydrogen cation. A Lewis acid is a chemical species being able to accept an electron-pair, reacting thereby with a Lewis base to form a Lewis bond, ie. a shared electron pair between Lewis acid and base.