What is the pH of 0.10 mol.dm^(-3) sodium hydroxide solution, NaOH?

To calculate the pH of a solution/compound, we can use the equation: pH = - log₁₀[H+]Within the sodium hydroxide solution, you would observe Na + and OH - ions so in order to find the concentration of H+ ions, we can use the K_w equation as it has both H+ and OH - ions within it.Each mole of NaOH gives 1 mole of OH- ions in solution therefore the concentration of OH- ions would also be 0.1 mol.dm^-3.Using the K_w equation, you find that the concentration of H+ ions to be 1.00 x 10^-13 mol.dm^-3. Now that we have the concentration of H+ ions, we can use the equation to calculate the pH: pH = - log₁₀[1.00 x 10^-13] , therefore the pH of the sodium hydroxide solution is 13.