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Phenolphthalein /ˌfiːnɒlfˈθeɪliːn/ is a chemical compound with the formula C20H14O4 ... because of the reaction with carbon dioxide. Thymolphthalein is used for th...

What is the function of phenolphthalein in titration - Answers.com


If phenolphthalein remains, it will react with the solution and change back to purple. .... What is the purpose for using phenolphthalein for an acid base titration ?

Why do we use phenolphthalein as an indicator in titration? - Quora


Nov 25, 2015 ... Well, you may have used phenolphthalein as the indicator in a particular titration ... Well, the function's in the name: it serves to indicate to the ...

?The Function Of Phenolphthalein In Both Experiments ... | Chegg.com


The function of phenolphthalein in both experiments was to: A. signal when the NaHSO3 was gone. B. signal when the NaOH was gone. C. cause the HCHO ...

Acid-Base Indicators - Chemistry Department - Elmhurst College


Phenolphthalein is an indicator of acids (colorless) and bases (pink). Sodium hydroxide is a base, and it was in the pitcher at the beginning, so when added to  ...

Phenolphthalein Definition - Glossary of Chemistry Terms


This is the definition of phenolphthalein. ... Phenolphthalein turns pink in pH greater than 8.3 and colorless in acidic solutions. The chemical formula for ...

PHENOLPHTHALEIN - (77-09-8) - Physical Properties • Chemical ...


Physical and chemical properties, including bonding and thermodynamic values for phenolphthalein.

Phenolphthalein | Define Phenolphthalein at Dictionary.com


Phenolphthalein definition, a white, crystalline compound, C 2 0 H 1 4 O 4 , used as ... phenolphthalein as shown above is not a good indicator for this purpose.

Phenolphthalein-NaOH Kinetics Phenolphthalein is one of the most ...


end of an acid-base titration, the pink phenolphthalein color fades if the solution ... The purpose of this experiment is to show that both m and n are equal to unity ...



Phenolphthalein is a colourless, weak acid which dissociates in water forming pink anions. Under acidic conditions, the equilibrium is to the left,and the ...

More Info

Effect of phenolphthalein on the function and structure of ... - NCBI


Am J Dig Dis. 1978 Oct;23(10):909-13. Effect of phenolphthalein on the function and structure of rodent and human intestine. Saunders DR, Sillery J, Surawica C  ...

What is the function of an indicator in a titration? - Ask.com


The function of an indicator in a titration process is to determine the ... examples of pH indicators are methyl orange, methyl red, phenol red and phenolphthalein.

Effect of phenolphthalein on the function and structure of ... - Springer


Phenolphthalein (PHE) is the active ingredient in at least 12 over-the-counter laxative preparations. It is alleged to have a minor effect in the small intestine ...