Cân bằng các phương trình sau:
1, \(Cu+H_2SO_4\left(\text{đ}\text{ặc}\right)\rightarrow CuSO_4+H_2S+H_2O\)
2, \(Fe+H_2SO_4\left(\text{đ}\text{ặc}\right)\rightarrow Fe_2\left(SO_4\right)_3+SO_2+H_2O\)
3, \(Fe+H_2SO_4\left(\text{đ}\text{ặc}\right)\rightarrow Fe_2\left(SO_4\right)_3+H_2S+H_2O\)
4, \(Fe+HNO_3\left(\text{đ}\text{ặc}\right)\rightarrow Fe\left(NO_3\right)+NO_2+H_2O\)
5, \(Fe+HNO_3\left(\text{đ}\text{ặc}\right)\rightarrow Fe\left(NO_3\right)_3+N_2O+H_2O\)
6, \(Fe+HNO_3\left(\text{đ}\text{ặc}\right)\rightarrow Fe\left(NO_3\right)_3+N_2+H_2O\)
1, 4Cu+5H2SO4(đặc)→4CuSO4+H2S+4H2O
2, 2Fe+6H2SO4(đặc)→Fe2(SO4)3+3SO2+6H2O
3, 8Fe+15H2SO4(đặc)→4Fe2(SO4)3+3H2S+12H2O
4, Fe+6HNO3(đặc)→Fe(NO3)3+3NO2+3H2O
5, 8Fe+30HNO3(đặc)→8Fe(NO3)3+3N2O+15H2O
6, 10Fe+36HNO3(đặc)→10Fe(NO3)3+3N2+18H2O