What forms when nitrogen and sulfur oxides in air dissolve in rain?
acid snow
carbon rain
dioxide rain
acid rain
Acid rain forms when nitrogen and sulfur oxides in air dissolve in rain ( Figure below ). This forms nitric and sulfuric acids. Both are strong acids. Acid rain with a pH as low as 4.0 is now common in many areas. Acid fog may be even more acidic than acid rain. Fog with a pH as low as 1.7 has been recorded. That’s the same pH as toilet bowl cleaner!.