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11.某三價金屬氯化物水溶液,用 4.0 安培電流電解 2 小時後,在陰極析出金屬 19.7 克,則此金屬之原子量為若干? (A)33(B)65.8 (C)128 (D)197。
問題詳情
11.某三價金屬氯化物水溶液,用 4.0 安培電流電解 2 小時後,在陰極析出金屬 19.7 克,則此金屬之原子量為若干?
(A)33
(B)65.8
(C)128
(D)197。
參考答案
答案:D
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
上一篇 :
10.電解下列各水溶液,何者陽極的產物和其他三者不同? (A) H2SO4(B) NaOH (C) NaCl (D) Na 2SO4 。
下一篇 :
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