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A compound 'X' is a weak acid and it exhibits colour change at pH close to the equivalence point during neutralization of NaOH with CH3COOH. Compound 'X' exists in ionized form in basic medium. The compound 'X' is : (A) methyl orange (B) methyl red (C) phenolphthalein (D) erichrome Black T |
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Answer» (C) phenolphthalein Phenolphthalein is weak acid give colour in basic medium. |
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