What is the p. h. of rainwater?
Most rainwater has a pH of 5.6 to 5.8, simply due to the pressence of carbonic acid (H2CO3). The latter is formed from dissolved CO2 gas and H2O.
Most rain water has a Ph of 5.6 to 5.8.
The pH of rainwater is approximately 5.6. pH values under 5.6 are classified as acid raid.
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