Question

At 25 °C, what is the hydroxide ion concentration, [OH−] , in an aqueous solution with a hydrogen ion concentration of [H+]=3.0×10−8 M?

Answer 1

To calculate the hydroxide ion concentration, we can use the equation Kw = [H+][OH-] and solve for [OH-]. Given the hydrogen ion concentration and the ion product constant for water at 25 °C, we can calculate the hydroxide ion concentration to be 3.3 x 10^-7 M.

Step-by-step explanation:

In the given question, we are provided with the hydrogen ion concentration ([H+]) and we need to calculate the hydroxide ion concentration ([OH-]). We can use the equation Kw = [H+][OH-] to solve this problem, where Kw is the ion product constant for water. At 25 °C, Kw is equal to 1.00 x 10^-14. Given that [H+] = 3.0 x 10^-8, we can solve for [OH-].

First, divide Kw by [H+]: [OH-] = Kw / [H+] = (1.00 x 10^-14) / (3.0 x 10^-8).

Therefore, the hydroxide ion concentration ([OH-]) in the aqueous solution at 25 °C is 3.3 x 10^-7 M.