Hydroxide Ion Concentration Calculations Tutorial
- The hydroxide ion concentration in an aqueous solution, [OH-], in mol L-1, can be calculated if the pOH of the solution is known.
- pOH is defined as the negative logarithm (to base 10) of the hydroxide ion concentration in mol L-1
pOH = -log10[OH-]
[OH-] is the concentration of hydroxide ions in mol L-1 (mol/L or M)
- [OH-] in mol L-1 can be calculated using the equation (formula):
[OH-] = 10-pOH
- As the pOH increases, the concentration of hydroxide ions in the solution decreases.
As the pOH decreases, the concentration of hydroxide ions in the solution increases.