In Acid Base Titration Which Indicator Is Used
Phenolphtalein was chosen because it changes color at pH levels ranging from 83 to 10. Methyl red and methyl orange. Pchem Teaching Lab Additional Background Information Thymol Blue - 2 nd change. . Adding a proton yields the structure on the right colored red. Strong acid-strong base titration. Phenolphthalein indicator used in acid-base titration. In basic solutions it will look pink. In acid-base titrations the end point is detected by a pH sensitive indicator. Well usually ANY indicator can be used. Why is phenolphthalein used as an indicator in saponification value of fats. Weak acid-weak base titration. Titration is completed when the solution turns a light pink. All the indicators show color change at pH 7 D. A suitable indicator for the titration of the weak acid CH3COOHaq and the strong base NaOHaq would be either thymol blue pH range 80 96 or phenolphthalein pH range 83 100. Indi...