Traffic in the cities releases NOx gases into the atmosphere (in the form of NO and NO2). NOx gases
contribute to rainwater acidification by dissolving and transforming into a strong acid (HNO3, nitric
acid) according to the reaction below:
4 NO + 3 O2 + 2 H2O → 4 HNO3
a) 0,001 g of NO dissolves into 1 liter of rainwater and all of it transforms into nitric acid. What is the
molar concentration of nitric acid in the rainwater?
b) Supposing that no other acids are dissolved in the rainwater, what is the pH of rainwater?