Chapter 15, Problem 49QRT

Interpretation Introduction

Interpretation:

The chemical equation which shows neutralization of acid rain by limestone has to be stated.

Concept Introduction:

Acid rain simply means the increase in the concentration of hydrogen ions.  The precipitation reaction with $\text{pH}$ value less than $5.6$ is known as acid rain.  The $\text{pH}$ value equal to $5.6$ is $\text{pH}$ of natural unpolluted rain.  The neutral water has $\text{pH}$ value $7$, but rain water becomes acidified naturally.