How Does Phenolphthalein Turn Pink?
How Does Phenolphthalein Turn Pink? Phenolphthalein is a weak acid and is colorless in solution although its ion is pink. … Adding hydroxide ions (OH–, as found in bases) will change the phenolphthalein into its ion and turn the solution pink. Why does phenolphthalein turn pink in a base? We will first try to understand