pOH Calculations Tutorial
- pOH is a measure of the hydroxide ion (OH-) concentration in a solution.
- pOH is always written with a lower case "p" and an upper case, or capital, "O" and "H"
(The chemical symbol for the hydroxide ion is OH- and pOH is a measure of hydroxide ion concentration.)
- pOH is defined as the negative logarithm (to base 10) of the hydroxide ion concentration in mol L-1
- pOH of a solution is calculated using the formula (equation):
pOH = -log10[OH-]
where [OH-] is the concentration of hydroxide ions in mol L-1 (mol/L or M)
- As the concentration of hydroxide ions increases, the pOH of the solution decreases.
As the concentration of hydroxide ions decreases, the pOH of the solution increases.