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Q.

What is the effect of adding phenolphthalein to a solution?

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a

It changes the pH of the solution

b

It changes the colour of the solution

c

It increases the concentration of the solution

d

It decreases the concentration of the solution

answer is B.

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Detailed Solution

Phenolphthalein is a chemical indicator that changes colour when added to a solution. It turns pink in the presence of a base, and colourless in the presence of an acid.

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