Which of the following has pH value 7?

Q. Which of the following has pH value 7?

(A) Pure water
(B) Neutral solution
(C) Basic solution
(D) Acidic solution
(E) None of the above/More than one of the above

Answer: More than one of the above

If the pH of a solution is less than 7, the solution is called acidic; if the pH is about 7, the solution is neutral; if the pH is greater than 7, the solution is is called basic. In an acidic solution, then, the concentration of hydrogen ions is greater than the concentration of hydroxide ions.

The pH of pure water is 7. In general, water with a pH lower than 7 is considered acidic, and with a pH greater than 7 is considered basic. The normal range for pH in surface water systems is 6.5 to 8.5, and the pH range for groundwater systems is between 6 to 8.5.