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doletuananh1
2 năm trước
kẽm tác dụng với axit sunfuric theo sơ đồ sau : Zn + H2SO4 ----> Zn SO4 + H2 có 13g kẽm tham gia phản ứng . Tính : a) Khối lượng axit tham gia phản ứng b) Khối lượng muối ZnSO4 tạo thành c) Thể tích khí hidro thu được sau phản ứng (đktc)
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