Answers

2016-02-08T15:15:03+05:30
When phenol is heated with hot concentrated H₂SO₄ and pthalic anhydride then it gets converted into phenolphthalein...
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2016-02-14T15:59:40+05:30
listen it is a really simple process when we hest phenol with hot concentrated H₂SO₄ and pthalic anhydride then we get  phenolphthalein...

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