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Hydroxy Compounds and Ethers — Chemistry STD 12 — Question

Tamilnadu BoardEnglish MediumSTD 12ChemistryHydroxy Compounds and Ethers2 Marks
Question
How is phenolphthalein prepared from phenol?
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Answer

On heating phenol with phthalic anhydride in presence of con. $H _2 SO _4$, phenolphthalein is obtained,

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