(3)硫化物 Cu2S+HNO,(浓)-→Cu2+SJ+NO↑+H2O Ag2S+HNO3(浓)→Ag+S↓+NO↑+H2O MS+4CN→[M(CN)2]+S2- (4)Ag有相当强的氧化性： H2O+H3PO3+Ag-H3PO+Ag+H NH2OH+AgBr→N2↑+Ag↓+HBr+H2O N2H4+AgN21+Agl+N2H5"⑶硫化物 Cu2S+HNO3(浓)→Cu2++S↓+NO↑+H2O Ag2S+HNO3(浓)→Ag++S↓+NO↑+H2O M2S+4CN-→[M(CN)2] -+S2- ⑷ Ag+有相当强的氧化性: H2O+H3PO3+Ag+→H3PO4+Ag↓+H+ NH2OH+AgBr→N2↑+ Ag↓+HBr+H2O N2H4+Ag+→N2↑+ Ag↓+N2H5 +