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miutrinh08
2 năm trước
Bài 3: Cho một lượng mạt sắt dư vào 400 ml dung dịch HCl 1M, thu được khí H2. a) Viết PTHH b) Tính thể tích khí H2 thoát ra (đktc) và khối lượng Fe phản ứng. c) Dẫn hết toàn bộ lượng khí H2 ở trên qua ống đựng CuO nung nóng dư, thu được 10,24 gam Cu. Tính hiệu suất của phản ứng.
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