The pOH of a basic solution is 2.97. What is [H⁺]?

Answer 1

pH + pOH = 14 MEMORIZE THIS RELATIONSHIP

pOH = -log [OH-]

We can solve this problem by 2 different methods

(1). pOH = -log [OH-]

[OH-] = 1x10^-2.97 = 1.07x10^-3 M

[H+][OH-] = 1x10^-14

[H+] = 1x10^-14 / 1.07x10^-3 = 9.35x10^-12 M

(2). pH + pOH = 14

pH = 14 - pOH

pH = 14 - 2.97

pH = 11.03

pH = -log [H]

[H+] = 1x10^-11.03

[H+] = 9.3x10^-12 M