2HCl+ 22 = 2n02 + H2

It looks like you're trying to represent a chemical reaction, but there appears to be some confusion with the symbols and the stoichiometry. I will assume that you are referring to a reaction involving hydrochloric acid (HCl) and possibly some form of nitrogen dioxide (NO2) and hydrogen gas (H2).

If you meant a reaction of hydrochloric acid with a metal that produces hydrogen gas (like the reaction with zinc, Zn, or magnesium, Mg), it can be represented as follows:

For zinc: \[ \text{2HCl} + \text{Zn} \rightarrow \text{ZnCl}_2 + \text{H}_2 \]

For magnesium: \[ \text{2HCl} + \text{Mg} \rightarrow \text{MgCl}_2 + \text{H}_2 \]

If you meant a different reaction involving nitrogen dioxide, please clarify or provide the correct reactants and products you're referring to, and I would be happy to help you write the correct equation or balance it.