What is [OH-] for a solution at 25°C that has [H3O+] = 2.35 * 10-3 M?

4.26x10^-12M

Explanation:

The following were obtained from the question:

[H3O+] = 2.35x10^-3M

[OH-] = ?

Recall: [H3O+] x [OH-] = 1 x10^-14

2.35x10^-3 x [OH-] = 1 x10^-14

Divide both side by 2.35x10^-3

[OH-] = 1 x10^-14/2.35x10^-3

[OH-] = 4.26x10^-12M