Calculate the concentrations of hydronium and hydroxide ions in a solution prepared by dissolving 0.345g of solid NaOH in enough water to make 225mL of solution. Also calculate the pH and pOH of the solution.

Question

Calculate the concentrations of hydronium and hydroxide ions in a solution prepared by dissolving 0.345g of solid NaOH in enough water to make 225mL of solution.  Also calculate the pH and pOH of the solution.

DrBob222 · Answer

NaOH is a strong electrolyte. It ionizes completely. moles = grams/molar mass. Solve for moles. M = moles/L soln. Substitute and solve for OH, convert to pOH, then to pH.

Natalea · Answer

Thank you! I will probably have more questions in a bit! I appreciate it!