A buffer solution is made as followed: i) Adding 13.50mL of0.200mol/L sodium hydroxide to 50.00 mL of 0.100M propanoic acid.ii) diluting the resulted buffer into a total volume of 100.00mL. Ka of propanoic acid is 1.3 * 10 ^-5
a. Calculate the pH of the buffer - before the dilution.
b. Calculate the pH of the buffer - after the dilution
c. 1.50mL of 0.10mol/L hydrochloric acid solution is added to 25.00mL of the diluted buffer solution. Calculate the pH after theaddition of the hydrochloric acid solution.