Question

three solutions A B and C have pH level 2, 7 and 8. Which solution will turn phenopthelein indicator to pink?

Answer 1

Solution of A turns phenopthelin pink.b'coz it an acid. B&C solution turn is neutral and base.

Answer 2

Hey
here's your answer !!

Phenoplhthalein is a chemical indicator used for identifying whether a given substance is an acid , or a base or whether it is neutral in nature.

Phenoplhthalein turns pink when a base is added to it.
But it remains colourless when an acidic compound or a neutral compound is added to it.

In the given situation , the three solutions A , B and C have pH level 2, 7 and 8.

Any substance whose pH value is less than 7 ( < 7 ) is acidic in nature.
Any substance whose pH value is greater than 7 ( > 7 ) is basic in nature.
Any substance whose pH value is equal to 7 ( = 7 ) is basic in nature.

So solution A is acidic in nature .
So solution B is neutral in nature .
So solution C is basic in nature .

So solution C will turn phenolphthalein indicator to pink .

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Hope it helps !!