TABLE 17.1 Formation Constants for Some Metal Complex Ions in Water at 25 °C Complex lon к Chemical Equation Ag(NH3)2* 1.7 x 107 Ag*(ag) + 2 NH3(aq) = Ag(NH3)2 (aq) Ag(CN), 1 x 1021 Ag*(aq) + 2 CN-(aq) = Ag(CN)2 (aq) Ag(S,0,) 2.9 x 1013 Ag*(aq) + 25,0 (aq) = Ag(S,03) (aq) Al(OH), 1.1 x 103 Al3* (aq) + 4 OH (aq) = Al(OH)4 (aq) CdBr?- 5 x 10 Cd²*(aq) + 4 Br (aq) = CdBr- (aq) 8 x 1029 1 x 103 5 x 1012 Cr(OH)4 Cr*(aq) + 4 OH (aq) = Cr(OH)4 (aq) Co(SCN),?- Co2+(aq) + 4 SCN (aq) = Co(SCN),²- (aq) Cu(NH3)? Cu²*(aq) + 4 NH3 (aq) = Cu(NH3)* (aq) 2+ Cu(CN),- 1 x 1025 Cu2*(aq) + 4 CN (aq) Cu(CN),* (aq) 2+ Ni(NH3),* 2+ 1.2 x 10° Ni² (aq) + 6 NH3 (aq) = Ni(NH3)2* (aq) Fe(CN), Fe(CN), 1 x 105 Fe2*(aq) + 6 CN (aq) = Fe(CN), (aq) 1x 1042 Fe*(aq) + 6 CN (aq) = Fe(CN),- (aq) Zn(OH),- 4.6 x 1017 Zn²"(aq) + 4 OH (aq) = Zn(OH)² (aq)

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From the value of Kf listed in Table, calculate the concentration
of Ni2+ (aq) and Ni(NH3)62+ that are present at
equilibrium after dissolving 1.25 g NiCl2 in 100.0 mL of
0.20 M NH3(aq).

TABLE 17.1 Formation Constants for Some Metal Complex Ions
in Water at 25 °C
Complex lon
к
Chemical Equation
Ag(NH3)2*
1.7 x 107
Ag*(ag) + 2 NH3(aq) = Ag(NH3)2 (aq)
Ag(CN),
1 x 1021
Ag*(aq) + 2 CN-(aq) = Ag(CN)2 (aq)
Ag(S,0,)
2.9 x 1013
Ag*(aq) + 25,0 (aq) = Ag(S,03) (aq)
Al(OH),
1.1 x 103
Al3* (aq) + 4 OH (aq) = Al(OH)4 (aq)
CdBr?-
5 x 10
Cd²*(aq) + 4 Br (aq) = CdBr- (aq)
8 x 1029
1 x 103
5 x 1012
Cr(OH)4
Cr*(aq) + 4 OH (aq) = Cr(OH)4 (aq)
Co(SCN),?-
Co2+(aq) + 4 SCN (aq) = Co(SCN),²- (aq)
Cu(NH3)?
Cu²*(aq) + 4 NH3 (aq) = Cu(NH3)* (aq)
2+
Cu(CN),-
1 x 1025
Cu2*(aq) + 4 CN (aq)
Cu(CN),* (aq)
2+
Ni(NH3),*
2+
1.2 x 10°
Ni² (aq) + 6 NH3 (aq) = Ni(NH3)2* (aq)
Fe(CN),
Fe(CN),
1 x 105
Fe2*(aq) + 6 CN (aq) =
Fe(CN), (aq)
1x 1042
Fe*(aq) + 6 CN (aq) = Fe(CN),- (aq)
Zn(OH),-
4.6 x 1017
Zn²"(aq) + 4 OH (aq) = Zn(OH)² (aq)
Transcribed Image Text:TABLE 17.1 Formation Constants for Some Metal Complex Ions in Water at 25 °C Complex lon к Chemical Equation Ag(NH3)2* 1.7 x 107 Ag*(ag) + 2 NH3(aq) = Ag(NH3)2 (aq) Ag(CN), 1 x 1021 Ag*(aq) + 2 CN-(aq) = Ag(CN)2 (aq) Ag(S,0,) 2.9 x 1013 Ag*(aq) + 25,0 (aq) = Ag(S,03) (aq) Al(OH), 1.1 x 103 Al3* (aq) + 4 OH (aq) = Al(OH)4 (aq) CdBr?- 5 x 10 Cd²*(aq) + 4 Br (aq) = CdBr- (aq) 8 x 1029 1 x 103 5 x 1012 Cr(OH)4 Cr*(aq) + 4 OH (aq) = Cr(OH)4 (aq) Co(SCN),?- Co2+(aq) + 4 SCN (aq) = Co(SCN),²- (aq) Cu(NH3)? Cu²*(aq) + 4 NH3 (aq) = Cu(NH3)* (aq) 2+ Cu(CN),- 1 x 1025 Cu2*(aq) + 4 CN (aq) Cu(CN),* (aq) 2+ Ni(NH3),* 2+ 1.2 x 10° Ni² (aq) + 6 NH3 (aq) = Ni(NH3)2* (aq) Fe(CN), Fe(CN), 1 x 105 Fe2*(aq) + 6 CN (aq) = Fe(CN), (aq) 1x 1042 Fe*(aq) + 6 CN (aq) = Fe(CN),- (aq) Zn(OH),- 4.6 x 1017 Zn²"(aq) + 4 OH (aq) = Zn(OH)² (aq)
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