What is the pH of an aqueous solution at 25.0°C in which [H+] is 0.0025 M?
A) 5.99 B) 2.60 C) -2.60 D) -5.99 E) none of the above

B

Explanation:

by using formula

pH = –log(0.0025) = –log(25/10⁴)

= 4 – log(25) = 2.60

your answer would be “dry”

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