Why phenolphthalein disapperas in highly alkaline solution?
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Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colourless in acidic solutions and magenta in basic solutions. ... It is a weak acid, which can lose H+ ions in solution.
Solubility in water: 400 mg/L in water
Solubility in other solvents: Insoluble in benzene or hexane, very soluble in ethanol ...
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