Question

On adding phenolphthalein indicator to a colorless solution, no change is observed. What is the nature of this solution?

Answer 1

Answer: Acidic / Neutral solution

Explanation: It is because when we add acidic solution to phenolphthalein, it becomes colourless. If it is a neutral solution, the colour of the phenolphthalein becomes colorless.

Answer 2

The solution is acid cause when phenolphthalein is added to acid it turns colorless and in base it turns pink or red