Understanding pOH

* pOH is a measure of the hydroxide ion concentration ([OH⁻]) in a solution.

* It's related to the pH by the equation: pH + pOH = 14

Calculating [OH⁻]

1. Use the pOH to find [OH⁻]:

* The formula is: [OH⁻] = 10⁻¹⁰ˣ

* In this case, pOH = 4.5, so:

[OH⁻] = 10⁻⁴·⁵

2. Calculate the value:

* [OH⁻] ≈ 3.16 x 10⁻⁵ M

Therefore, the hydroxide ion concentration of the solution is approximately 3.16 x 10⁻⁵ M.