Phenolphthalein is a chemical compound with the formula C20H14O4. Visit BYJU'S to understand the properties, structure and uses of C20H14O4 (Phosphoric Acid) explained by India's best teachers.
Structure of phenolphthalein is given below: In acidic medium the colour of phenolphthalein is colourless and in the basic medium, it has a very dark pink colour.The reaction with acid and base is given below: It mostly dissolves in alcohol and is slightly soluble in...
Name:Phenolphthalein,CAS:77-09-8.Use:Used as an acid-base indicator stimulant laxative for the treatment of constipation.Buy Phenolphthalein.Molecular Fomula:C20H14O4,Molar Mass:318.32,Density:1.27 g/cm3 at 32 °C,Melting Point:261-263 °C (lit.),Boling
Phenolphthalein indicator is a commonly used acid/alkali titration indicator in analytic chemistry. Phenolphthalein, in alkaline solution, has its colorless lactone ring open to form quinone structure with the color exhibiting red. Upon coming across strong alkali, phenolphthalein can be converted into co...
in alcohol). The pH range of discoloration is 8.2 to 10. It is colorless upon PH <8.2, is red upon pH> 10. The principle of color change is mainly due to that under different acid and alkali conditions, the structure of the molecule itself changes and further causes different colors. ...
Structure of Phenolphthalein The phenolphthalein indicator has two different structures based on whether it is in an alkali (pink) or acid (colorless) solution. Both structures absorb light in the ultra-violet region, a region not accessible for the human eye. However, the pink form also absorbs...
a-(p-Hydroxyphenyl)-a-(4-oxo-2,5-cyclohexadien-1-ylidine)-o-toluic Acid Chocolax Colax Evac-Q-Kit Evac-Q-Kwik Evac-Q-Tabs Evac-U-Gen Evac-V-Lax Ex-Lax Feen-A-Mint Laxative Mints Fenolftalein[Czech] Fenolftaleina[Spanish][INN] ...
reaction occurs with reagent zinc, sodium hydroxide and solvent H2O with other condition of heating for 96 hours. The yield is about 99%. Besides, it is used to perform a presumptive blood test known as the Kastle-Meyer test. It also is used as an acid or base indicator and used in ...
and single carbon-to-carbon bonds. In basic solutions, the acid and base indicators become ions by losing hydrogen ions from their chemical composition, usually from an OH group. This changes the structure of the molecule, causing indicators to absorb light at different wavelengths and change ...