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Phenolphthalein is a chemical compound with the formula C20H14O4 and is often written as ... The rather slow fading reaction that produces the colorless In( OH)3− ion is sometimes used in classes for the study of reaction kinetics.


Phenolphthalein is a colourless, weak acid which dissociates in water forming ... are used in titration solutions to signal the completion of the acid-base reaction.


Phenolphthalein is basically an indicator used for the detection of a end point or we can say for ... This is a simple reaction where Phenolphthalein is an acid-base indicator that is colorless in acidic solutions and pink in basic solutions.


phenolphthalein | C20H14O4 | CID 4764 - structure, chemical names, ... Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. ...... feces, allergic reactions including fixed-drug eruption, Stevens- Johnson syndrome ... Do not put any ointments, oils, or medication in the victim's eyes without ...


Whereas most dyes do not change color with the amount of acid or base present, there are many molecules, known as acid ... Phenolphthalein is an indicator of acids (colorless) and bases (pink). ... The simplified reaction is: H+ + OH- --> HOH.


Apr 24, 2017 ... Phenolphthalein is a mildly acidic compound that has a chemical formula of C20H14O4. It is primarily used as a pH indicator, allowing chemists ...


For litmus, it so happens that the 50 / 50 colour does occur at close to pH 7 - that's why ... Phenolphthalein is another commonly used indicator for titrations, and is .... at exactly the pH of the equivalence point of the second stage of the reaction.

Apr 17, 2012 ... Phenolphthalein is used as an acid - base indicator. ... Phenolphthalein indicator is pink or fuchsia in alkaline solu... ... How do I synthesize it?.


As an indicator of a solution's pH, phenolphthalein is colourless below pH 8.5 and ... with bases to form salts, and promotes certain chemical reactions (acid catalysis). ... Computer once meant a person who did computations, but now the term ...