 2 = 1.0  2 = [Ag(NH 3 ) 2 + ]/ C Ag 1.0 = [Ag(NH 3 ) 2 + ]/ 0.010 [Ag(NH 3 ) 2 + ] = 0.010 M Therefore, it is clear that most Ag + will be in the complex form Ag(NH 3 ) 2 + since the formation constant is large for the overall reaction: K f = k f1 *k f2 K f = 2.5x10 3 * 1.0x10 4 = 2.5x10 7 The actual concentration of ammonia is 0.08 M not 0.10 M.