A sufficient amount of sulfuric acid was added to the reaction between the copper and the copper.1. 首先分析镁和氧化铜反应:
- 镁和氧化铜在加热条件下可能发生反应\(Mg + CuO=\!=\!=Cu + MgO\)。
2. 然后将反应后的固体加入足量硫酸中:
- 如果镁过量,镁会和硫酸反应\(Mg + H_{2}SO_{4}=\!=\!=MgSO_{4}+H_{2}\uparrow\),会看到有气泡产生。
- 反应生成的氧化镁\(MgO\)也会和硫酸反应\(MgO + H_{2}SO_{4}=\!=\!=MgSO_{4}+H_{2}O\)。
- 若氧化铜有剩余,氧化铜与硫酸反应\(CuO + H_{2}SO_{4}=\!=\!=CuSO_{4}+H_{2}O\)。
- 如果之前反应生成了铜,铜与稀硫酸不反应。
综上,将足量硫酸加入镁和氧化铜反应后的固体中,可能会看到有气泡产生(镁过量时),反应后的溶液中会有硫酸镁、可能有硫酸铜等溶质,固体可能有铜(如果生成且未反应完)。
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