Calculate the hydrogen ion concentration and pH of the following:

(a) 0.010 M HNO₃

(b) A solution prepared by diluting 10.0 mL of 0.50 M HClO₄ to 50.0 mL

(c) A solution prepared by adding 9.66 g HCl(g) to some water and then diluting the solution to 500.0 mL Strategy Remember that the ionization of a strong acid is complete. Use the starting quantities to calculate the amounts (number of moles) of hydrogen ion, and then calculate the concentration from the amount and the volume of solution.