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【Daily Question】Chemical Analysis Version, 4/19/2020

2020-04-19View Original

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This post was last edited by zjp on 2020-4-19 10:45. Multiple-choice question: Which of the following statements is incorrect? ( ). A. The hydroxyl value of polyether polyols can be determined by the phthalic anhydride acylation method. B. The ammonium cerium nitrate method can be used to detect trace amounts of hydroxyl compounds in the visible light range. C. The acylation method can be used to determine the contents of primary and secondary amines. D. The acylation method can be used to determine alcohols in aqueous solutions. D

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