Understanding the Relationship
* pH and pOH: pH and pOH are related by the following equation: pH + pOH = 14
* Hydroxide ion concentration: pOH is the negative logarithm (base 10) of the hydroxide ion concentration ([OH-]): pOH = -log[OH-]
Calculations
1. Calculate pOH:
* pOH = 14 - pH
* pOH = 14 - 4.3 = 9.7
2. Calculate [OH-]:
* [OH-] = 10^(-pOH)
* [OH-] = 10^(-9.7)
* [OH-] ≈ 2.0 x 10^(-10) M
Therefore, the hydroxide ion concentration of a solution with a pH of 4.3 is approximately 2.0 x 10^(-10) M.
