Question

Normal rain has pH between ______ and ______

Answer 1

Acid rain:

• Acid rain is caused by a chemical reaction that occurs as it releases into the air pollutants such as sulphur dioxide and nitrogen oxides.
• These compounds will rise very far into the atmosphere, where more acidic contaminants, such as acid rain, combine and react with water, oxygen, and other chemicals to form.
• Standard rain has a pH of roughly 5.6; it is mildly acidic since it dissolves carbon dioxide (CO₂) to form mild carbonic acid. Normal, clean rain has a pH value of between 5.0 and 5.5, which is slightly acidic.
• Acid rain commonly has a pH in the range of 4.2. The scale of the pH varies between 0 and 14. A pH of 7 will be neutral. A pH lower than 7 would be acidic. Basic is a pH greater than 7.

Normal rain has pH between 5.0 and 5.5.