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Bài 8. a-Khử hoàn toàn 6,4g oxit kim loại (AxOy) cần dùng 2,688 lít H2. Sản phẩm kim loại A sau khi phản ưng xong đem hoà tan hết trong dd HCl dư thì có 1,792lít khí thoát ra. Tìm CTHH oxit kim loại, thể tích các khí đo ĐKTC b- Cho 11g hỗn hợp Fe và Al vào 350 ml dd axit clorhidric 4M ; sau khi phản ứng xảy ra xong thì điều chế được mấy lit khí Hidro ?; khí đo ở ĐKT.
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