The number of hydronium ions in 1 ml of an aqueous solution of pH 12.0 at 25°C is — Ionic Equilibrium Chemistry Question

💡 Solution & Explanation

Given pH = 12.0, [H3O+] = 10^-12 M. Moles in 1 mL (10^-3 L) = 10^-12 * 10^-3 = 10^-15 mol. Number of ions = 10^-15 * 6.02 * 10^23 = 6.02 * 10^8.