Ben Bernanke Chairman, Federal Reserve, United States Big Ben is stepping down when he term ends in January 2014, and Janet Yellen has been nominated to lead the Fed next year. Bernanke has steered the Fed during some of the biggest financial challenges since the Depression.
Definition of PHENOLPHTHALEIN. : 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. See phenolphthalein defined for kids.ADVERTISEMENT.efinition of PHENOLPHTHALEIN. : 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. See phenolphthalein defined for kids. ADVERTISEMENT.
Phenolphthalein is used in titrations mostly to indicate the pH of the solution. If acidic solutions are added with this chemical they become colorless. If the acidic solutions are already colorless, they remain colorless after its addition too.Strong acidic solutions appear in orange color with phenolphthalein.The basic solutions appear pink in color.If the concentration of phenolphthalein in solution is more, then it can give purple color to the basic solutions. The pink color of this indicator in basic solutions gradually fades away and the solution becomes colorless after sometime.Phenolphthalein is not soluble in water and hence the solution of it is generally prepared using alcohol. Phenolphthalein solution is itself a weak acid and loses hydrogen ion in the solution.he pink color of this indicator in basic solutions gradually fades away and the solution becomes colorless after sometime. Phenolphthalein is not soluble in water and hence the solution of it is generally prepared using alcohol. Phenolphthalein solution is itself a weak acid and loses hydrogen ion in the solution.