Question

When a drop of phenolphthalein is added to an
unknown colourless solution, the solution turns into
pink colour. Identify the nature of the solution.

Answer 1

Answer:

Phenolphthalein is a Synthetic Acid-Base indicators. Which reacts with acid to be colourless and when it reacts with Base it then be of Pink color. Hence, the given unknown solution A may be BASIC in nature which results to change the color of Phenolphthalein to pink. While the solution B may be of acidic nature

Explanation:

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Answer 2

Phenolphthalein is a Synthetic Acid-Base indicators. Which reacts with acid to be colourless and when it reacts with Base it then be of Pink color. Hence, the given unknown solution A may be BASIC in nature which results to change the color of Phenolphthalein to pink. While the solution B may be of acidic nature