(1) Cu → CuO → CuSO4 → Cu(OH)2 → CuSO4 → Cu
(2) C → CO2 → CaCO3 → CaO → Ca(OH)2 → CaCl2
收錄日期: 2021-04-30 16:58:42
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130815000015KK08512