题目

氧化还原反应化学式配平(在方框内填配好的数.在[]内填物质名称)
(1)□P4+□CuSO4+□H2O==□Cu3P+□H3PO4+□H2SO4
(2)□FeS+□H2SO4(浓)==□SO2+□Fe2(SO4)3+□S+□H2O
(3)□As2S3+□HNO3(稀)+□H2O==□H3AsO4+□H2SO4=□NO
(4)□KMnO4+□KNO2+□[ ]==□K2SO4+□MnSO4+□KNO3+□H2O
(5)□H2S+□SO2==□S+□[ ]
(6)□Na2SX+□NaClO+□NaOH==□Na2SO4+□NaCl+□H2O

提问时间：2020-10-04

答案

11P4+60CuSO4+96H2O=20Cu3P↓+24H3PO4+60H2SO4 2FeS+6H2SO4(浓)==3SO2+Fe2(SO4)3+2S+6H2O3As2S3+ 28HNO3(稀)+ 4H2O== 9H2SO4+ 6H3AsO4 + 28NO 2KMnO4+5KNO2+3H2SO4==K2SO4+2MnSO4+5KNO3+3H2O2H2S+SO2=3S+2H2ONa2Sx+(...