I did a lab experiment regarding chemical reactions for aq solutions and precipi

Question

I did a lab experiment regarding chemical reactions for aq solutions and precipitate formation. In the lab report, the question of "Complexation Reactions" came up. I realize that the complexation reaction involves a particular ion being surrounded by water molecules, and then having those dispersed and replaced by an ion in the reaction forming a solid. But in the not explanitory examples, some complex molecules end up still partially bonded with water molecules and some are completely dispersed of water molecules, replaced by the reacting ion. How in the hell do I determine the end result complex molecule? In a complex reaction, will the end result molecule always be charge neutral? See the specific reactions below I need to answer:

Reaction 1: Silver Nitrate and Sodium Chloride

Molecular: AgNO3 + NaCl --> AgCl (s) + NaNO3

Complexation Reaction: [Ag(H2O)2]+ + ________ --> _________ (s) + __________

Reaction 2: Lead Nitrate and Sodium Hydroxide

Molecular Reaction: Pb(NO3)2 + 2NaOH --> Pb(OH)2 (s) + 2NaNO3

Complexation Reaction: [Pb(H2O)4]2+ + ________ ---> _________ + __________ (s)

Reaction 3: Iron (III) Nitrate and Hydrochloric Acid

Complexation Reaction: [Fe(H2O)6]3+ + _________ ---> __________ + __________ (s)

?????

Explanation / Answer

Complexation reactions,

1. AgNO3 and NaCl

complexation reaction,

[Ag(H2O)2]+ + Cl- --> AgCl (s) + 2H2O

2. Pb(NO3)2 and NaOH

complexation reaction,

[Pb(H2O)4]2+ + 2OH- ---> Pb(OH)2 (s) + 4H2O

3. Fe(NO3)3 and HCl

complexation reaction,

[Fe(H2O)6]3+ + 3Cl- ---> FeCl3 (s) + 6H2O

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