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AAT Bioquest

Are Lewis acid and Bronsted acid the same?

Posted March 13, 2024


Answer

No, Lewis acid and Bronsted acid are not the same. 

Lewis acid is a substance that does not contain a hydrogen ion (H+) or hydroxide ion (OH). According to Lewis, acid is a proton acceptor. 

Bronsted acid is a substance that is capable of donating protons or hydrogen ions (H+) to another compound. According to Bronsted, acid is a proton donor. 

Additional resources

Brønsted and Lewis acid adducts of triazenes

Weak Base pH Calculator

Weak Acid pH Calculator