逐级稳定常数 Ls [Cu(NH3)2++N (H . oo m a onor Cu(NH3)J e Cut+NH ICu(n K稳i=TC [Cu(NH3)2+ →Cu(NH3)212+a2CA田NBN Cu(NH Cu(Nh2+NH2→CuNH3)2K稳3=CuNH1)2 Cu(NH3)32++NH→0NH)FP(,N 累积稳定常数βn, Cu2+NH3→→CuNH3Pp1 Cu(NH3)2a Cu2N2)=K稳 Cp2+2 2NH3->[Cu(NH3)2Jz+的 Cu(, K 稳1N稳2 C+4NH1→CuNH)P CuNHa 9 o [Cu2 IINH 2时k稳1k稳2N稳3K系 =K 稳=β1×β2×P3 ×pn逐级稳定常数 Cu2+ + NH3 ⎯→ [Cu(NH3 )]2+ K稳1 = [Cu(NH3 )]2+ + NH3 ⎯→ [Cu(NH3 )2 ] 2+ K稳2 = [Cu(NH3 )2 ] 2+ + NH3 ⎯→ [Cu(NH3 ) 3 ] 2+ K稳3 = [Cu(NH3 ) 3 ] 2+ + NH3 ⎯→ [Cu(NH3 ) 4 ] 2+ K稳4 = [Cu(NH3 ) 2 2+] [Cu(NH3 ) 2+][NH3 ] [Cu(NH3 ) 2+] [Cu2+][NH3 ] [Cu(NH3 ) 3 2+] [Cu(NH3 ) 2 2+][NH3 ] [Cu(NH3 ) 4 2+] [Cu(NH3 ) 3 2+][NH3 ] 累积稳定常数n , K稳 = 1 2 3············n . Cu2+ + NH3 ⎯→ [Cu(NH3 )]2+ 1= = K稳1 Cu2+ + 2NH3 ⎯→ [Cu(NH3 )2 ] 2+ 2= = K稳1 K稳2 ……. Cu2+ + 4NH3 ⎯→ [Cu(NH3 ) 4 ] 2+ 4= = K稳1 K稳2K稳3 K稳4 [Cu(NH3 ) 2+] [Cu2+][NH3 ] [Cu(NH3 ) 2+] [Cu2+][NH3 ] 2 [Cu(NH3 ) 2+] [Cu2+][NH3 ] 4