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mystic22
2 năm trước
Dùng 1,568 lit khí hiđro (đktc) để khử 3,2 gam sắt (III) oxit (Fe2O3) . Giả thiết phản ứng xảy ra hoàn toàn theo phương trình hóa học: Fe2O3 + 3H2 --> Fe + 3H2O. Hãy cho biết: a) Hãy cho biết khí hiđro hay Fe2O3 còn dư? Tính lượng dư. b) Khối lượng sinh ra là bao nhiêu?
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