Answer:
1. Calculate the concentration of acetate ions in the solution using the equation:
[Acetate] = (0.5 * 10^-3) + (2 * 5 * 10^-3) = 0.015 M
Calculate the concentration of hydrogen ions using the equation:
[H+] = Kw / [Acetate] = 1 * 10^-14 / 0.015 = 6.67 * 10^-13 M
Calculate the pH using the equation:
pH = -log [H+] = -log (6.67 * 10^-13) = 12.18
Second answer:
2.Calculate the concentration of acetate ions in the solution using the equation:
[Acetate] = (1.5 * 6 * 10^-3) + (0.4 * 5 * 10^-3) = 0.09 M
Calculate the hydrogen ion concentration using the equation:
[H+] = 10^-4.76 / [Acetate] = (10^-4.76) / 0.09 = 1.51 * 10^-6 M
Calculate the pH using the equation:
pH = -log [H+] = -log (1.51 * 10^-6) = 5.82
Step-by-step explanation: