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anhthu0352
2 năm trước
Cho 14 gam Fe vào 200 ml dung dịch hỗn hợp H2SO4 2,5 M và HNO3 1M . Sau khi phản ứng xảy ra hoàn toàn thu được dung dịch X. Thêm dung dịch NaNO3 dư vào X được dung dịch Y. Cho bột Cu vào Y thì số mol Cu bị hòa tan tối đa là : ( biết sản phẩm khử của NO3- , chỉ có NO duy nhất ) A. 0,1 mol B. 0,05 mol C. 0,2 mol D. 0,15 mol
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