Before the equivalence point, i.e. between 0% and 90% of the reaction, the pH of HCL increases faster than acetic acid to reach the equivalence point. At this stage the solution is acidic. At the equivalence i.e. between 90% and 100% of the reaction, the moles of acid are stoichiometrically equal to the moles of base. The equivalent point for both HCL and acetic acid is 7.67 and 9.19, respectively. The volume at which the equivalent point occurs is 23.25 ml and 24.50 ml for HCL and acetic acid, respectively. The volume is different due to different pH. The phase here changes from acidic to basic and the jumps are sudden for both acids. Beyond the equivalence point, i.e. between 110% and 200% of the reaction, the reaction is almost complete, the base has already reacted with the acid at this point in the reaction and both HCL and acetic acid have a Almost similar pH after the equivalence point because at this stage the pH is controlled by the base since it is in a basic medium. The 0% pH of the reaction for HCL and acetic acid is 0.70 and 2.72, respectively. At 50%, i.e. between 0% and the equivalent point, the pH of HCL is 3.84