Question

What is the balanced reaction between NO2 and Lime water?

Answer 1

`NO_2` is called mixed anhydride.as it forms two acids `HNO_3 and HNO_2` when treated with water.

`2NO_2+H_2O->HNO_3+HNO_2`

So when treated with a base `Ca(OH)_2`, this will form two types of Ca-salt of `HNO_3 and HNO_2` acid produced.

The balanced equation will be

`2Ca(OH)_2+4NO_2-> Ca(NO_3)_2 + Ca(NO_2)_2+2H_2O`