When rain is accompanied by a thunder storm, the collected rain water will have a pH value — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

During a thunderstorm, lightning causes atmospheric nitrogen and oxygen to react, forming nitrogen oxides (like NO and NO₂). These oxides dissolve in rain water to form dilute nitrous and nitric acid ($\text{HNO}_2$ and $\text{HNO}_3$), which lowers the pH of the collected rainwater compared to normal rain.