Write the reaction equations for the transitions N2 – N2O5 – HNO3 – KNO3

1. Obtaining nitric anhydride – very toxic, upon decomposition it forms poisonous nitric oxide (II).

2N2 + 5O2 = 2N2O5.

2. Nitric oxide (V) dissolves easily in water to form nitric acid. Nitric acid was first discovered in the 17th century by the German alchemist Glauber, and the qualitative composition in the 18th century – by the Frenchman Lavoisier.

N2O5 + H2O = 2HNO3.

3. The reaction of acid and alkali – obtaining potassium nitrate or potassium nitrate (in the food industry additive E252).

НNO3 + KOH = KNO3 + Н2О.