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tung20044abc
2 năm trước
Câu 1: Viết phương trình phản ứng (nếu có) khi cho khí clo vào: a, Al (t°C) b, dd KOH (t° thường) c, dd CaF2 d, FeCl2 Câu 2: Khi hòa tan clo vào nước ta được nước clo có màu vàng nhạt, khi đó một phần clo tác dụng với nước. Dung dịch nước clo có chứa những chất gì? Viết phương trình phản ứng? Câu 3: Nêu hiện tượng xảy ra khi cho một luồng khí clo qua dd KBr. Viết phương trình phản ứng? Câu 4: Cho 7,1g đơn chất halogen X2 tác dụng vừa dù với 6,4g Cu. Xác định halogen đó? Giúp mik vs ạ Mik cảm ơn nhiều nhiều
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