calculate the pH of a buffer solution made by adding 10.0g of anhydrous sodium acetate (NaC2H3O2) to 100 ml of 0.100M acetic acid. sume there is no change in volume on adding the salt to the acid. calculate the pH change when 0.0020 moles of sodium hydroxide, NaOH is added to 100.0ml of the buffer solution i part a. asume there is no change in volume on adding the NaOH to the buffer solution