問題詳情
21. 下列何者為氧化還原反應？
(A) NaOH＋HCl → NaCl＋H2O
(B) 2Na＋2H2O → H2＋2NaOH
(C) AgNO3＋NaCl → AgCl＋NaNO3
(D) 3H2＋N2 → NH3
(E) Cr2O72＋2OH → 2CrO42＋H2O。
(A) NaOH＋HCl → NaCl＋H2O
(B) 2Na＋2H2O → H2＋2NaOH
(C) AgNO3＋NaCl → AgCl＋NaNO3
(D) 3H2＋N2 → NH3
(E) Cr2O72＋2OH → 2CrO42＋H2O。
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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