Question

Three Solutions A.B and C have the pH 2,8 and 7 respectively. Which One of these will turn phenolphthalein indicator pink?

Answer 1

Solution B as it has a pH value of 8 which shows that it is a basic solution and phenolphthalein indiactor changes it's colour to pink in basic solution.

Answer 2

The phenolphthalein indicator turns pink in basic solutions .Out of three solutions A,B and C; A is acidic ,B is basic and C is neutral. Since B is basic it will turn phenolphthalein indicator pink.