17. Acid and Base Equilibrium

An aqueous solution of HBrO₄ has a pH of 4.34. Find the molar concentration of HBrO₄ solution.

Calculate the pH of a 25 mL of 5.45 × 10⁻² M LiOH solution.

HI is a strong acid (K_a = 3.2 × 10⁹). Calculate [H⁺], [OH⁻], pH and pOH of a 7.1 × 10⁻² M HI solution.

What is the pH of an HCl solution if [H⁺] = 0.03?

The flask shown here contains 10 mL of HCl and a few drops of phenolphthalein indicator