A What are the hydroniumion and hydroxideion concentrations of a solution at 25 Celsius that is 3 5 x 10^4 M

Question

a. What are the hydronium-ion and hydroxide-ion concentrations of a solution at 25 Celsius that is 3.5 x 10^-4 M

barium hydroxide. barium hydroxide is a strong base.

b. What is the pH at 25 degrees Celsius?

Science