Phenolphthalein meaning
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 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.
Phenolphthalein meaning
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Webphenolphthalein. 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. … WebJan 19, 2024 · Phenolphthalein is a common pH indicator that is colorless under acidic conditions and fuchsia pink under alkaline conditions. Phenolphthalein indicator is a pH …
Webphenolphthalein ( ˌfiːnɒlˈθeɪliːn; -lɪɪn; -ˈθæl-) n (Chemistry) a colourless crystalline compound used in medicine as a laxative and in chemistry as an indicator. Formula: C20H14O4 Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
WebPhenolphthalein exposure causes multiple carcinogenic effects, including neoplasm in kidney, adrenal medulla, hematopoietic system, and ovary in rats. There is a report that reveals oral administration of phenolphthalein is able to cause histiocytic sarcoma and lymphoma in B6C3F1 mice. Moreover, phenolphthalein administration in rats could ... 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 …
WebPhenolphthalein definition: A white to pale-yellow, crystalline powder, C 20 H 14 O 4 , used in making dyes and as an acid-base indicator in chemical analysis: it is red in a solution …
WebWhat does this mean? A meniscus is a curved surface of a liquid that is created at the colliding point of a solid surface. ... • What color will the solution of potassium phthalate and phenolphthalein. Related Textbook Solutions. ecco opportunistic infectionsWebDec 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. complex sentence that starts with sinceWebIn 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 ... ecco outdoor cleanerWebphenolphthalein 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 ecco outlet chicagoWebApr 9, 2024 · phenolphthalein in American English. (ˌfinɔlˈθælin, -iɪn, -ˈfθæl-, -nɑl-) noun. Chemistry & Pharmacology. a white, crystalline compound, C 20 H 14 O 4, used as an … complex sentence with aaawwubbisWebThe meaning of THYMOLPHTHALEIN is a crystalline compound C28H30O4 analogous to phenolphthalein and likewise used as an acid-base indicator. a crystalline compound … complex sentences in ielts writing task 2WebMar 10, 2024 · phenolphthalein ( countable and uncountable, plural phenolphthaleins ) ( chemistry, pharmacology) A white or yellowish -white crystalline compound C 20 H 14 O 4 … complex sentences using when