Question

A solution with a ph of 7 must be _____. an acid a base neutral water

Answer 1

Answer: A solution with a pH of 7 must be neutral.

Explanation:

If a solution has pH of 7 then the concentration of $H^+$ ions and $OH^{-}$ ions will be equal.

Thus, the concentration for both $H^+$ ions and $OH^{-}$ ions will be $1 \times 10^{-7}$. Generally, pH at 7 is considered as neutral.

Thus, it is concluded that a solution with pH of 7 must be neutral.

Answer 2

Neutral because an acid is between 1 and 6 and a base is between 8 and 14