Question

What impurities are present in rainwater?

   What impurities are present in rainwater?

Chemistry for Changing Times

Chemistry for Changing Times

John W. Hill; Terry… 14th Edition

Chapter 14, Problem 23

Instant Answer

Solved by Expert Rabia Bibi

10/22/2021

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These impurities are absorbed by rainwater as it falls through the atmosphere. Show more…

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What impurities are present in rainwater?

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Key Concepts

Acid Rain Formation

The presence of dissolved acidic gases in rainwater leads to the formation of acid rain. Acid rain is a significant environmental concern due to its detrimental impacts on ecosystems, structures, and bodies of water. It results from both natural processes and anthropogenic pollution, highlighting the importance of studying the interactions between atmospheric chemistry and precipitation.

Atmospheric Deposition

Rainwater collects impurities from the atmosphere through a process known as atmospheric deposition. This includes natural particulates such as dust, pollen, and soot, as well as contaminants from human activities. As rain falls, these airborne particles are captured, influencing the chemical and physical properties of the water.

Soluble Gases

Many gases present in the atmosphere dissolve in rainwater. For instance, carbon dioxide readily dissolves forming carbonic acid, and pollutants like sulfur dioxide and nitrogen oxides dissolve to form stronger acids. This dissolution alters the pH of the rain, often leading to increased acidity.

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