Why phenolphthalein is used as indicator in acid-base titration?
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Phenolphthalein's common use is as an indicator in acid-base titrations. ... Phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments. It is a weak acid, which can lose H+ ions in solution. The phenolphthalein molecule is colorless, and the phenolphthalein ion is pink.
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