Question

How do you write a balanced chemical equation for the reaction in which dinitrogen pentoxide gas reacts with water to produce nitric acid?

Answer 1

`N_2O_5(g) + H_2O(g) rightleftharpoons2HNO_3(g)`

Explanation:

`"Dinitrogen pentoxide"` is the `"acid anhydride"` of nitric acid.