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Ph of Acid Rain is Sometimes as Low as 2. Explain. - Chemistry

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Short Note

pH of acid rain is sometimes as low as 2. Explain.

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Solution

Normal rain is only slightly acidic having a pH of about 5.6.

This is because carbon dioxide reacts with it to form weak carbonic acid.

CO+ H2O → H2CO3

pH of acid rain usually ranges between 5.6 and 3.5; at times, it can be as low as 2.

Concept: Air Pollution and Its Causes
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APPEARS IN

Selina Concise Science Chemistry 1 Class 9 ICSE
Chapter 8 Atmospheric Pollution
Exercise 8 (B) | Q 2 | Page 133
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