Chapter 48, Problem 4CT

Summary Introduction

To explain: How calcium carbonate-rich rock reduces the effects of acid rain.

Concept introduction: The common pollutants of air are sulfur dioxide and nitrogen oxide, which cause acid rain. Sulfur dioxide is released primarily from the coal-burning process of power plants. In dry weather, airborne sulfur and nitrogen oxide coat dust particles. When these pollutant particles combine with water, they become wet acid deposition. Then, it falls down as acid precipitation, known as acid rain.