Posted by Anonymous on Sunday, May 16, 2010 at 7:57pm.
I'm not helping if I write these for you. What is it you don't understand?
A general rule, not always followed, is that the complexing agent is twice the valence. That is
Ag^+ + 2NH3 ==> Ag(NH3)2^+
Many of the OH complexes add one OH; as in
Cr(OH)3 + OH^- ==> Cr(OH)4^- and
Al(OH)3 + OH^- ==> Al(OH)4^-
The easiest thing to do is to memorize them. I think most of us have done that during usage through the years.
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