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Dẫn 10,08 lít hỗn hợp gồm 2 khí là metan và axtelien đi qua dung dịch brom dư. Sau phản ứng, thấy có 4,48 lít khí thoát ra khỏi bình. a) Viết pthh xảy ra b) tính phần trăm thể tích mỗi khí trong hỗn hợp ban đầu. c) tính khối lượng brom tham gia phản ứng.
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