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Report on Acid Rain The Problem of Acid Rain Acid rain is a well-known phrase that is being heard more and more often during the past few decades. We all know that it exists but many do not understand what it is. Acid rain is formed when several gases dissolve in rainwater to form acids. The most common natural acid forming gases are carbon dioxide and chlorine (from salt), which dissolve to form carbonic acid and hydrochloric acid. Carbonic acid is very weak, and little hydrochloric acid is formed, as chlorine is quite rare. The most common cause of acid rain is sulphur dioxide, which causes 70 percent of acid rain, with other oxides of nitrogen causing the 30 percent. Acid rain is a widespread problem and can travel long distances. This map shows the affect it has had on forests in northern Europe. Acid rain acidifies lakes and streams and contributes to damage of...

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