Synthesis of nickel salts question...?

Question

Can anyone help with this - not sure if I'm doing it right! OK I need to give the 6 equations for the synthesis of hexamminenickel chloride and have been given the first and last ones. The first equation is
[Ni(H2O)6]2+ + NH3 <===> [Ni(H2O)5 NH3]2+ + H2O
(The arrow ment to be equilibrium arrow)

and the overall equation is;

[Ni(H2O)6]2+ + 6NH3 <===> [Ni(H2O)5 NH3]2+ + 6H2O

Am I right in thinking that each step would simply be as the first but with each step having one more molecule of NH3 and H2O each time e.g. step 2;

[Ni(H2O)6]2+ + 2NH3 <===> [Ni(H2O)5 NH3]2+ + 2H2O

and step 3;

[Ni(H2O)6]2+ + 3NH3 <===> [Ni(H2O)5 NH3]2+ + 3H2O

etc...


or am I doing it totally wrong! Any help would be very much appreciated as nothing in my textbook about it and it is for a lab tomorrow!!!

Answer 1

Yes, you're somewhat right.. It's just a replacement of the 6 water molecules with 6 ammonia molecules.

But for each 'step' in a synthesis you must start with the product of the PREVIOUS step. So rewrite your equations.

By the way you're missing the chlorine in your equations as well.