A scientist measures the pH of some rainwater and finds that it is acidic.

Which pH corresponds with the acidic quality of the rainwater?

A. 6

B. 7

C. 8

D. 9

I think the correct answer from the choices listed above is option A. The pH that corresponds with the acidic quality of the rainwater should be the value 6. A value that is below 7 is said to be acidic while higher than 7 is a base. Hope this answers the question.

Acids tend to have a pH of below 7 (which is neutral).

The only option that makes the pH statement above true is A, 6.

So the answer is with no doubt, A. 6