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phamlong39999
2 năm trước
Cho sản phẩm tạo thành khi đun nóng hỗn hợp gồm 5,6g bột Fe và 1,6g bột S vào 500ml dung dịch axit HCl thì thu được hỗn hợp khí bay ra và một dung dịch A (Hiệu suất phản ứng là 100%) a) Tính % thể tích của mỗi khí trong hỗn hợp khí b) Để trung hòa HCl còn dư trong dd A phải dùng 125ml dd NaOH 2M. Tính Cm của dd HCl đã dùng
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