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huyentranghk2001
2 năm trước
Câu 2: Dẫn khí CO (dư) đi vào ống sứ nung nóng đựng hh A gồm: CuO, Fe3O4, Al2O3, MgO thu được chất rắn B và khí X bay ra khỏi ống. Cho B vào dd axit HCl lấy dư, khuấy kĩ thấy còn lại phần không tan C. Giả sử các phản ứng xảy ra hoàn toàn. Viết các PTPƯ xảy ra. Khí X là khí gì? Hãy cho biết chất rắn B, C gồm những chất nào?
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