Phenolphthalein is a weak acid, which is why when it is added in a strong base, it gives pink color and the color gets intense as the ph of the base. It is written as “phph” or hin”. Web phenolphthalein is a synthetic indicator which remains colourless in acidic and neutral medium but changes it's colour to pink in the basic medium. Web phenolphthalein is an organic compound which is used medicinally as a cathartic. At ph = 8.2 we see a colour change. Metal oxides are basic in. After adding 2 drops of phenolphthalein. Web the phenolphthalein will turn red, the lead nitrate will form a milky white precipitate of lead(ii) hydroxide and the copper sulfate will form the deep blue [cu(nh 3) 4 (h 2 o) 2]. Phenolphthalein is one of the best indicators to vizualize.in acidic solution ph = 0 − 8, the solution is colourless; Web phenolphthalein is an organic compound that is used as a ph indicator.
The compound remains colorless in acids but. This happens because the base is neutralized in an acid. Web phenolphthalein is naturally colorless and works differently than litmus paper. Web phenolphthalein is colorless under acidic, neutral, and slightly basic conditions. Web phenolphthalein indicator mixed with base that first turns pink and then clear. At ph = 8.2 we see a colour change. The compound remains colorless in acids but. When the sodium hydroxide, which is a base, is mixed with phenolphthalein, it turns pink. It turns pink in the presence of alkaline solutions. Phenolphthalein has been used as a laxative before. It is written as “phph” or hin”.
