Which aqueous solution(s) below is(are) considered basic ?
I. A solution with a pH = 6
II. A solution with [OH^-] = 1×10^{- 7}
III. A solution with [H₃O⁺] = 1×10^{- 9}

Question

Which aqueous solution(s) below is(are) considered basic ? I. A solution with a pH = 6 II. A solution with [OH^-] = 1×10^{- 7} III. A solution with [H₃O⁺] = 1×10^{- 9}

Quizplus · Accepted Answer

A pH of 6 indicates an acidic solution, so option I is not basic. 
Option II has a hydroxide ion concentration of 1×10^-7, which indicates a neutral solution, so it is not basic. 
Option III has a hydroxide ion concentration of 1×10^-9, which indicates a basic solution. Therefore, the answer is C, III only.

Which Aqueous Solution(s) Below Is(are) Considered Basic