Nitric Acid formation from NO2 and OH

[abspqizax]

In Acid Rain caused by car emissions, how does NO2 and OH from water chemically bond to form HNO3 (Nitric Acid)?

From the subatomic and a skeletal formula perspectives, please. Does one covalent bond overpower another? How does the formula rearrange itself step by step?

 

[ajkoer]

The reaction of NO2 and water:

2 NO2 + H2O <----> HNO2 + HNO3