Illustrated Glossary of Organic Chemistry

Nitric acid: HONO₂. A strong Bronsted-Lowry acid, commonly used as a non-nucleophilic proton source and oxidizing agent. pK_a = -1.3 . The term can also refer to an aqueous solution of HONO₂. When the concentration of HNO₃ exceeds 86% the solution is termed fuming nitric acid, because at this concentration fumes form above the solution when exposed to air.

Lewis structure		Ball and spoke model		Space filling model