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Why does the sequence for extracting the diethyl ether solution of benzoic acid, naphthalene, and 1-naphthol...

Why does the sequence for extracting the diethyl ether solution of benzoic acid, naphthalene, and 1-naphthol start with aqueous bicarbonate and follow with aqueous hydroxide rather than the reverse order?

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Answer #1

NaOH is more basic compared to NaHCO3 (sodium bicarbonate).

NaOH can able to ionize both benzoic acid and 1-napthol to form their corresponding sodium salts. So, to selectively ionize (forming salt) the benzoic acid to form sodium benzoate sodium bicarbonate used (benzoic acid is more acidic compared to 1-napthol).

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