IGCSE Chemistry 0620/21/O/N/21 Q39

Question

39 Which statement about aqueous ethanoic acid is correct?

A It reacts with magnesium to produce a salt and hydrogen.
B It reacts with sodium hydroxide to produce a salt and hydrogen.
C It reacts with ammonium salts to produce ammonia.
D It turns red litmus blue.

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Answer ( 1 )

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    2022-05-13T12:38:52+08:00

    Ethanoic acid: CH3COOH

    A. 2CH3COOH + Mg –> Mg(CH3COO)2 + H2 (salt + hydrogen)

    B. CH3COOH + NaOH –> CH3COONa + H2O (salt + water)

    C. Ethanoic acid reacts with ammonium salts to produce ammonium ethanoate and an acid.

    D. Ethanoic acid turns blue litmus paper red.

    Ans: A

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