WebDec 26, 2024 · Explanation: Phenolphthalein is basic indicator which remain colorless in acidic and neutral solution and turns pink or magenta in basic solution. (iii) If few drops of NaOH is added again to the same solution, the solution become basic and the pink color of the phenolphthalein reappears. Webphenolphthalein noun phe· nol· phtha· lein ˌfē-nᵊl-ˈtha-lē-ən -ˈtha-ˌlēn, -ˈthā- : a white or yellowish-white crystalline compound C20H14O4 used in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids and in medicine as a laxative Example Sentences
Step 1: Phenolphthalein Alkalinity - Mountain Empire Community …
WebMar 6, 2024 · phenolphthalein, (C 20 H 14 O 4), an organic compound of the phthalein family that is widely employed as an acid-base indicator. As an … WebMar 10, 2024 · phenolphthalein ( countable and uncountable, plural phenolphthaleins ) ( chemistry, pharmacology) A white or yellowish -white crystalline compound C 20 H 14 O 4 used in medicine as a laxative and in analysis as an indicator because its solution is brilliant red in alkalies and is decolorized by acids. Related terms [ edit] phenolphthalin trading biotech
What does it mean when phenolphthalein turns pink?
WebWe generally represent the weak acids that are indicators by the formula HIn, meaning that this is the molecular form of the acid that is going to lose the hydrogen ion. In this case the ionic form will be In -. For the indicator to be useful … Webphenolphthalein: 1 n a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases … WebIn an acid-base titration, the titrant is a strong base or a strong acid, and the analyte is an acid or a base, respectively. The point in a titration when the titrant and analyte are present in stoichiometric amounts is called the equivalence point. This point coincides closely to the endpoint of the titration, which can be identified using an ... trading bishop for rook