Question

A few drop of phenolphthalien indicator were added to an unkown solution A.It acquired pink colour. Now another unknown solution B was added to it drop by drop and the solution becomes colourless. Predicat the nature of A and B​

Answer 1

Phenolphthalein is a Synthetic Acid-Base indicators. Which reacts with acid to be colorless 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. Since, Original color of Phenolphthalein is also colorless.

PLEASE MARK BRAINLIEST IF YOU GOT IT

Answer 2

Answer:

whenever phenolphthalein is added to an acidic solutions , the solution turns pink while when it is added to a base it the solution remains colourless.

From this we can easily pretend that the solution A is acidic in nature and B is basic in nature.

hope this will help you mate...

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