氧化还原反应(配平方程式)(1)_KNO3+_S+_C=_K2S+_CO2+_N2(2)_Br2+_CO3(2-)=_Br(-)+_BrO3(-)+_CO2(3)_Cu2S+_H(+)+_HNO3(-)=_Cu(2+)+_NO+_S+_H2O(4)_Fe+_NO2(-)+_OH(-)=_FeO2(2-)+_NH3+_H2O(5)_P+_CuSO4+_H2O=_Cu3P+_H3PO4+_H2SO4
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