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36. STP下,某金屬元素M 8.0克和過量鹽酸反應,生成可溶性的MCl3及5.6升氫氣,關於此反應的敘述,下列何者正確?(A)化學方程式為2M + 6HCl → 2MCl3 + 3H2 (B)可
問題詳情
36. STP下,某金屬元素M 8.0克和過量鹽酸反應,生成可溶性的MCl3及5.6升氫氣,關於此反應的敘述,下列何者正確?
(A)化學方程式為2M + 6HCl → 2MCl3 + 3H2
(B)可得氫氣0.25克
(C)此反應用去0.45莫耳氯化氫
(D) MCl3中M的重量百分率為20.2 %
(E)此金屬的原子量為48 。
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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