(1) After the equivalence point, there is excess titrant present.

(2) If the end point is close to the equivalence point, the titration is accurate.

(3) The midpoint and equivalence point for carbonic acid are much higher.

(4) The equivalence point is identified from the first faint pink color that persists in the solution being titrated.

(5) The article discussed the changing relation between total alkalinity content and titration equivalence point and changed situation of methyl orange in the different PH value color.

(6) According to the experiments, it is found that the titration points between the first equivalence point and the second are more accurate.