Solutions, acids, and equilibrium

pH and pOH

pH = −log[H+]  ·  pH + pOH = 14

[H+] hydrogen ion concentration (M), at 25 °C

Watch forFor a × 10⁻ⁿ, pH = n − log a. A larger coefficient lowers the pH a little.

Apply it · 3 questions

  1. pH from hydroxide concentrationSolutions, acids, and bases · set 1 · easy
  2. pH when the coefficient isn't 1Solutions, acids, and bases · set 1 · medium
  3. pH of a strong acidSolutions, acids, and bases · set 1 · easy