Phenolphthalein test paper is one of the simple test papers commonly used in chemical analysis. It’s highly targeted. Its turns red in case of alkali, and is colorless in acid and neutral solution. To test the presence of ammonia in the air, it will be appears light red. The preparation...
PEARSON IIT JEE FOUNDATION-ACIDS, BASES AND SALTS-Level 2 Explain the nature of resultant solution when 20 mL of 0.05 M NaOH is ... 10:35 Account for the variation of acidic character with increases in the ox... 04:05 Two salts are dissolved in water separately. When phenolphthalein is...
Phenolphthalein is a weak acid and is colorless in solution although its ion is pink. If hydrogen ions (H+, as found in an acid) were added to the pink solution, the equilibrium would switch, and the solution would becolorless. Adding hydroxide ions (OH-, as found in bases) will change...
Over in Brooklyn, New York, an enterprising Hungarian pharmacist called Max Kiss noticed this unusual story from his motherland and realised that although phenolphthalein was a terrible addition to wine it might be a useful solution to the problem of constipation. He got to work on a concoction ...