Polution or just a low pH level in the rain. (low pH means stronger acid)
A "normal" rain is considered to have a pH of 5,7. But the pH of acid rains can be as low as 2. The pH of rain is very variable on the Earth and during the year.
The base pH of acid rain is low, yes. Usually around 2.5 to 5.5 are the most acidic.
Acid rain has a low pH indicating that it is acidic. The pH in the soil can have a detrimental effect on some trees.
Actually, it decreses the pH, because the pH of acids are towards the low end (0) of the pH scale.
Low pH rain water is caused by pollutants in the air that create acids when they come in contact with water. Many of the pollutants are from burning fossil fuels such as coal.
the pH of normal rain is said to be between 5.5 an 5. the pH is not 7 because carbonic acid is contained withing rain droplets from the atmosphere. this is how the atmosphere rids itself of toxins. pH of rain can also become very low when large amount of acid are present (from pollutants) the pH at which fish die in ponds when affected by acid rain is 4.9. SLUM DEE BIC
Regular rain water is slightly acidic, with a pH of about 5.6 due to the presence of carbonic acid from the reaction between carbon dioxide and water. Acid rain pH has been recorded as low as 2.0 with an average value of 4.3.
Clean rain has a ph of 5.6, while the ph of acid rain is 4.2-4.4.
acid rain
the normal pH of rain water is about 5.6
acid rain pH 4.2 - 4.4