Question

If you encounter a problem that asks you to estimate the pOH, given the concentration and pH of an acidic solution, what written equation would you use?

• A. Molarity
• B. pOH = -log(OH${}^{-}$)
• C. pH = -log(H${}^{+}$)
• D. poH + pH = 14

Answer 1

The correct option is D poH + pH = 14

$pOH=-log\left[O{H}^{-}\right]$.
As we write, $pH=-log\left[H^{+}\right]$, in the same we write for $pOH$.
Here, $pH+pOH=14$.