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phamlebaotram
2 năm trước
Cho một ít mạt sắt dư vào 200(ml) dung dịch HCl 2M. Sau khi phản ứng kết thúc thu được dung dịch A và V(l) khí a) Tính khối lượng mạt sắt đã tham gia phản ứng b) Tính V c) Xác định Cᴍ dung dịch A (V𝚍𝚍 thay đổi không đáng kể)
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