Phenolphthalein meaning
WebPhenolphthalein is an organic compound which is used medicinally as a cathartic. It has a chemical formula C 20 H 14 O 4. It is written as “phph” or HIn”. It is used in acid-base … 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 …
Phenolphthalein meaning
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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 WebPhenolphthalein is an indicator that changes from pink to colorless at pH 8.3 when acid is added (pH decreases). Water that has a pH >8.3 is said to have “phenolphthalein alkalinity,” which is alkalinity due primarily to the presence of carbonate or hydroxide ions.
WebSep 8, 2024 · Phenolphthalein is a colorless crystalline solid with the chemical formula C 20 H 14 O 4. Sometimes it may be in a pale yellow or orange powder form. In its natural state, … WebMeaning of Phenolphthalein. What does Phenolphthalein mean? Information and translations of Phenolphthalein in the most comprehensive dictionary definitions resource on the web.
Webphenolphthalein. noun [ U ] chemistry specialized uk / ˌfiː.nɒlˈfθæl.iːn / us / ˌfiː.noʊlˈθæl.iːn /. a substance that is colourless when it is mixed with an acid and pink or red when mixed … Webphe·nol·phthal·ein. (fē′nōl-thăl′ēn′, -thăl′ē-ĭn, -thā′lēn′, -thā′lē-ĭn) n. A white or pale yellow crystalline powder, C 20 H 14 O 4, used as an acid-base indicator, in making dyes, and …
WebMay 31, 2024 · What does pink phenolphthalein mean? Phenolphthalein, an acid-base indicator used to test the pH of a solution, turns pink due to the presence of a weak base. Although the anions are pink, the solution remains colorless in the presence of an acid. If the pH of the solution is 8.2 or above, the number of anions increases, causing the solution to ...
WebPhenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and … linda davis logan wv facebookWebphenolphthalein: 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 … hotel with bathtub in bangaloreWebDec 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. hotel with bathtub lincoln nebraskaWebOct 22, 2024 · Phenolphthalein alkalinity is a specific category of alkalinity. It is determined by titrating to pH 8.3 (where phenolphthalein changes colour). If you are titrating OH- with a strong acid, the titration curve looks like this. Thus, all of the OH- is neutralized at the phenolphthalein endpoint· hotel with bar/lounge clifton parkWebMar 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 linda davis if i could live your lifeWebphenolphthalein - definition, audio pronunciation and more for phenolphthalein: a substance that is colourless when it is mixed with an acid and pink or red when mixed with an…: See more in the Cambridge English-Chinese (Traditional) Dictionary - Cambridge Dictionary hotel with ballroom near meWebphenolphthalein. n. A white or pale yellow crystalline powder, C 20 H 14 O 4, used as an acid-base indicator, in making dyes, and formerly in medicine as an over-the-counter laxative. … hotel with bathtub in pennsylvania