hi

i did an experiment, and found that the addition of NH3 does not cause a solution with Ni 2+ to form precipitate because it makes a water soluble complex. Would this be the right chemical reaction to describe it:

[Ni(H20)4]2+(aq) +6NH3(aq)---> [Ni(NH3)6]2+ +4H20?

 

and, if i wanted to write an equation to show that excess NaOH added to a solution with Al3+ ions formed water soluble complexes too, could i simply write:

Al3+ +4NaOH--> Al(OH)4-+ 4Na+?

 

thanx a bunch