Question

this solution turns pink when we add phenolphthalein solution​

Answer 1

The Phenolphthalein pH Range

The Phenolphthalein pH RangePhenolphthalein is naturally colorless but turns pink in alkaline solutions. The compound remains colorless throughout the range of acidic pH levels but begins to turn pink at a pH level of 8.2 and continues to a bright magenta at pH 10 and above.

Answer 2

Answer:

Sodium Hyrdoxide.

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