toán Fe,Cu,HNO3??????

[anilin_1088]

hỗn hợp gồm 0,1 mol Fe, 0,15 mol Cu vào dd 0,6 mol AgNO3,sau phản ứng đc dd A và kết tủa B(TN1).Cho vào A dd HCL dư, sau đó thêm bột Cu vào(TN2)....
hỏi khối lượng B và m Cu tan trong dd ở thí nghiệm (2)...giải thử nha,có thắc mắc thì nhắn cho tui, để bữa nào rảnh tìm bài hay pót tiếp

[duonghung1269]

bài này cũng hơi khúc khuỷu
làm biếng tính toán quá nhưng nói sơ qua hướng giải thử ko bjk có đúng ko nữa
đầu tiên em Fe tác dụng trước với dd AgNO3 (tạo thành Fe3+ lun thì phỉa, Fe hết lun hay sao ý, rùi Cu vô tác dụng với AgNO3 dư)
kết quả kết tủa B là Ag sản phầm sinh ra (dd AgNO3 cũng vừa hết thì phải)
sau đó cho HCl vào thì trong dd vừa có ion H+, NO3- sẽ sinh ra phản ứng với 2 KL theo thứ tự Cu, Ag
tình hình là thế
chắc sai quá
please comment

[MrPucca]

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[old harry_angel]

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