Q2) A student prepared a buffer solution by mixing 500.0nl at 0.200M acetic acid (ka=1.8105) with 3.46g of sodium ccetert. a) Calculet the pH of This buffor. b) What volume of 0.040MHCl is requined to change the pH of the buffer by 2.5 units. c) what will be the pH change if The student added the same amount of HCl( in b) to a) Calculet the pH of This buffer. b) what volume A 0.040MHCl is required to change the pH of the buffer by 2.5 units. c) What will be the pH change if the student added the same amount \& HCl( in b) to 500.0ml of pure water