Step-by-Step Solution:1. Understanding Phenolphthalein: - Phenolphthalein is an acid-base indicator that changes color based on the pH of the solution. It is colorless in acidic solutions and turns pink in
phenolphthaleindoi:10.1007/978-3-540-72816-0_16705a compound of [(C6H6OH)2C2O2C6.H4], pale yellow powder which is soluble in neutral or acidic solution almost colorless, pink to dark red in alkalic medium, but colorless in presence of large alkali. U...
Why is HCl not used in titration? Why is NaOH used in titration? Why is GC-MS better than titration? How to choose an indicator for an acid-base titration? Why is an acidic medium required in a redox titration? What is the purpose of titration?
and then hydrolysing this with ice-water to give the corresponding phenolphthalein diphosphoric acid in the quinoid form of the formula which is converted to the monophosphroic acid derivative (II) above by refluxing in an acidic medium or by saponification followed by acidification. The inventio...
This result could be attributed to the suppression of interaction between the ionized acidic interfering components of human urine under alkaline conditions with the pyridine groups of PPMIP [17,31]. At last, 9.0 was chosen as the loading pH of the urine sample. Before PPMIP-SPE, the ...