What color is phenolphthalein in a basic solution Solutionco

What color is phenolphthalein in a basic solution?

Solution

color of phenolphthalein in a basic solution is pink and becomes colorless when solution turns acidic. It is used as a color indicator in biological solutions and buffers. It is used in the dialysis tube to indicate the pH change due to dialysis. The colour is influenced by temperature as pH changes with temperature. It is not easily soluble in water so it is first dissolved in alcohol before use.