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题目Cau 42: Dién phan dung dich hon hop gom HCl, NaCl, CuCl2, FeCl. Thú ty cac quá trinh nhan electron tren catot la D A. Cu^(2+)→Fe^(3+)→H_2O . B. Cu^(2+)→Fe^(3+)→H_2O C. Fe^(3+)→Cu^(2+)→H_2O D. Fe^(3+)→F→H_2O ...
Cau 11: Hoa tan het 26,4 gam hon hop X gom Fe, Fe;O va FeCO; trong dung dich chua 0,12 mol NaNO, va 0,6 mol H2SO , Sau khi ket thue phan ung thu duoe dung dich Y chi chua cae muoi va 0,24mol hon hop khi Z gom CO2, NO, H2. Cho dung dich NaOH du vao dung...