An/ solution with a ph of 9.82 has a hydroxide concentration . a. basic,1.51x10^-10 b. neutral,1.51x10^10 c. basic,6.61x10^-5 d. acidic,6.61x10^-5

            A Basic solution with a ph of 9.82 has a hydroxide concentration of 6.60 × 10⁻⁵ M.

Explanation:
                   As we know,
When,
                  pH = 7 (The Solution is Neutral)

                  pH < 7 (The Solution is Acidic)

                  pH > 7 (The Solution is Basic)

So, as given pH 9.82 is greater than 7, Hence, it is basic.
As we known,

                 pH + pOH  = 14

                 pOH  = 14 - 9.82

                 pOH  =  4.18

Concentration is calculated by taking Antilog,

                [OH⁻]  =  10^-pOH

                [OH⁻]  =  10^-4.18

                [OH⁻]  =  6.60 × 10⁻⁵

What are the choices?