IWhat is the colour of penoptelene indicator in basic solution?

Answer 1

Phenolphthalein is clear in a basic solution.

As the solution passes the equivalence point (pH=7.00) the indicator will start showing as a light pink in the solution. The lightest pink possible is preferred as your end point, the darker and richer the pink, the farther past the equivalence point you've gone.

Answer 2

Phenolphthalein indicator in basic solutions appears pink or magenta in color. This color change occurs when the pH of the solution reaches around 8.2 to 10.0, indicating the presence of a base.