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kenlevil299
2 năm trước
Dẫn 8,96 lít hỗn hợp khí CH4, C2H4 qua bình đựng dung dịch brom dư thấy thoát ra một chất khí và khối lượng bình brom tăng 7 gam. Nếu đốt cháy 8,96 lít hỗn hợp khí trên rồi cho toàn bộ sản phẩm cháy vào dung dịch nước vôi trong dư thì thu được m gam kết tủa. Các phản ứng xảy ra hoàn toàn. Các khí đo ở đktc. a. Viết PTHH. b. Tính % về thể tích của mỗi khí trong hỗn hợp. c. Tính giá trị của m.
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