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lemaithyloveis
2 năm trước
Câu 16: Cho 1,96 g bột sắt vào 100ml dd CuSO 4 10% có khối lượng riêng là 1,12g/ml. a. Viết ptpứ. b. Xác định nồng độ mol/lit của các chất trong dd sau khi pứ kết thúc. c. Cô cạn dd thu được bao nhiêu gam muối khan. Câu 17: Nguyên tắc để sản xuất gang, thép trong luyện kim là pứ khử oxit sắt trong quặng sắt thành sắt: a. Tính khối lượng sắt thu được khi khử hoàn toàn 4,64gam Fe 2 O 3 . b. Hòa tan lượng sắt thu được vào 500ml dung dịch H 2 SO 4 loãng có nồng độ 0,1M. Sau khi pứ xảy ra hoàn toàn, thì chất nào hết, chất nào dư. - Tính thể tích khí thoát ra (đktc) - Tính nồng độ mol/lit của các chất còn lại sau pứ. - Cô cạn dd sau pứ thu được bao nhiêu gam muối khan.
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