摘要: (1)HNO3 Ag (2)氧气 氢氧化铜悬浊液 (3)①4Ag++2H2O = 4Ag↓+4H++O2↑ ②HCHO+2Ag(NH3)2++2OH- HCOO-+NH4++2Ag↓+3NH3+H2O

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