Question

The pH of a solution is 4.3What is the pOH?

Answer 1

Answer: the pOH of this solution is 9.7

Explanation:

The question requires us to calculate the pOH of a solution, knowing that the pH of this same solution is 4.3.

Due to the ionic product of water (Kw = 1.00 x 10^-14 at 25°C and Kw = [OH] x [H+]), we can say that,

$pH+pOH=14$

Thus, applying the value of pH given by the question to the equation above, we'll have:

$4.3+pOH=14\rightarrow pOH=14-4.3\rightarrow pOH=9.7$

Therefore, the pOH of this solution is 9.7.