Acid Rain

The world we live today is the nest of pollution, toxic waste, and environmental degradation. In order to improve our planet, acid rain is the main factor to consider and must be controlled before the damage gets worse. In order to understand what acid rain is, we first need to understand the word "acidity". Acidity is a method to represent the compound measured on the pH scale, which is a logarithmic measure of hydrogen ion concentration (H +) during precipitation (1). Grade numbers are 0 to 14, materials with values ​​less than 7 are acidic, materials with more than 7 are considered alkaline.

Acid rain means what it means - rain is acidic. "Acid rain" is defined as rainwater with a pH less than 6. Due to dissolved gases in the rain, the rain becomes acidic. Approximately 70% of acid rain is formed by dissolved sulfur dioxide (SO 2) forming sulfuric acid. The remaining 30% comes from various nitrogen oxides (mainly NO 2 and NO 3 which have already adopted Mane Nox). A small amount of hydrochloric acid also constitutes hydrochloric acid. The expression is as follows.

Acid rain is a term composed of acid rain, snow, fog and particles. It is caused by sulfur dioxide and nitrogen oxides released from power plants' automobiles and other sources such as gas and oil. (EPA acid rain) Acid rain affects trees, earth, farms and surface water. As soon as the acid in the rain comes into contact with the object it starts chemical reaction. The pH value is a numerical value from 0 to 14 and measures the acidity of the substance. 0 is pure acid, 5 is the most neutral point, and 14 is the highest alkalinity. (Encarta Acid Rain, page 2)

Acid rain is a broad term that is widely used to explain some forms of acid rain. Wet deposition means that a large amount of sulfuric acid and nitric acid are present in rain, snow, fog or mist. As sulfur dioxide and nitrogen oxides are released into the atmosphere they dissolve in the water and fall with the precipitation. Dry deposition occurs when dust and smoke containing large amounts of sulfur dioxide and nitrogen oxides adhere to the ground, buildings, cars, plants. These gases are converted to acids when in contact with water. Acidity of acid rain may be different. The pH of pure water is 7, the pH of ordinary rain water is about 5.6. The rainfall in the United States in 2000 is only 4.3.