Q. Calculate the pOH of a solution at 25°C that contains 1 × 10⁻¹⁰ M of hydronium ions, i.e. H₃O⁺.
A) 4.000
B) 9.000
C) 1.000
D) 7.000
Explanation
[Solution from source] pH = −log(1 × 10⁻¹⁰) = 10, and at 25°C pOH = 14 − 10 = 4.000. 10 would be the pH itself, which is not an option. Answer (1).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.