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nguyenhoaithuong179
2 năm trước
Cho các chất sau: Fe2O3, BaCl2, Mg, MgO. Chất nào nói trên tác dụng với dung dịch H2SO4 loãng sinh ra: a. Chất khí cháy được trong không khí b. Dung dịch có màu vàng nâu c. Chất kết tủa màu trắng không tan trong nước và acid(BaSO4) d. Dung dịch không màu và nước Viết PTHH xảy ra(mỗi câu viết 1 PTHH)
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