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Phenolphthalein - Wikipedia


Phenolphthalein has been used for over a century as a laxative, but ... to contain blood, commonly known as the Kastle-Meyer test.



Phenolphthalein is an organic compound (C20H14O4) used as an acid-base indicator. The compound is colorless in acidic solution and pinkish in basic ...

phenolphthalein | C20H14O4 - PubChem


phenolphthalein | C20H14O4 | CID 4764 - structure, chemical names, ... Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. ...... Available in white or yellow forms; the monosodium salt is the most common ...

acid-base indicators - Chemguide


Methyl orange is one of the indicators commonly used in titrations. ... Phenolphthalein is another commonly used indicator for titrations, and is another weak acid ...

Phenolphthalein pH Indicator, 30mL (1 oz.) - The Science Company


This 30ml (one ounce) bottle of phenolphthalein is commonly used as an acid- base indicator, 8.2 (colorless) - 10 (red). It comes packed in a convenient squeeze ...

6. Acid-Base Indicators - Chemistry LibreTexts


Aug 21, 2015 ... Methyl orange is one of the indicators commonly used in titrations. ... Phenolphthalein is another commonly used indicator for titrations, and is ...

Phenolphthalein | Define Phenolphthalein at Dictionary.com


Phenolphthalein definition, a white, crystalline compound, C 2 0 H 1 4 O 4 , used as an indicator in acid-base titration and as a laxative. See more. ... Learn the correct uses of these two commonly confused homophones. What Character Was  ...

BBC - GCSE Bitesize Science - Titrations : Revision


Three indicators are commonly used to show whether a solution is acidic or alkaline: litmus ... Phenolphthalein changes colour sharply at about pH 8. For most ...

BBC Bitesize - GCSE Chemistry - pH scale and indicators - Revision 1


The pH scale is used to measure acidity and alkalinity. ... Litmus, phenolphthalein , and methyl orange are all indicators that are commonly used in the laboratory.

Why do chemists use methyl orange in a titration? | Reference.com


Methyl orange is frequently used as an indicator in acid titrations because it very ... orange is commonly used for strong acid titrations and not for base titrations. ... Among these indicators are universal indicators, phenolphthalein and methyl ...

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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 you .... Some other commonly employed indicators are bromothymol blue, thymol blue, alizarine yellow, methyl red, litmus and the list goes on].

What is Phenolphthalein? (with pictures) - wiseGEEK


Phenolphthalein is a mild acid that can be used for medical and scientific purposes. When used in medicine, this compound is most commonly recognized as an ...

Acid-Base Indicators - Chemistry Department - Elmhurst College


The most common method to get an idea about the pH of solution is to use an acid base ... A properly selected acid-base indicator can be used to visually " indicate" the ... Phenolphthalein is an indicator of acids (colorless) and bases ( pink).