Nitrous acid is classified as an Arrhenius acid because HNO2 contains
1. OH-ions
2. 02-ions
3. NO2-ions
4. H+ ions

Respuesta :

An Arrhenius acid is a molecule that when dissolved in water will donate an H+ in solution. ... Common examples of Arrhenius acids include: Hydrochloric Acid – HCl. Nitric Acid – HNO3.

4) H+ions is your answer , good morning , have a great day ahead.