Answer:
Nickel forms precipitate when it reacts with ammonia
Explanation:
The reaction between Nickel and ammonia is such that produces a precipitate which dissolves when excess amount is added to it.
At first, the precipitate produces a green precipitate of Ni(OH)₂ when more ammonia is added, the precipitate eases or dissolves, to form a solution of complex ion of Nickel forms.
Answer:
initially it will form precipitate and with excess of ammonia it will form soluble product.
Explanation:
The reaction of nickel with ammonia is:
With aqueous ammonia nickel precipitate out as green gelatinous Ni(OH)₂:
[light green][tex]Ni^{+2}(aq) + 2 OH^{-}(aq)--->2 Ni(OH)_{2}(s)[/tex] (green colored).
If we add further more of ammonia, it will dissolve to form blue solution as:
[tex]Ni(OH)_{2}(s) + 6NH_{3}(aq) <==> [Ni(NH_{3})_{6}]^{+2}(aq) + 2OH^{-}(aq)[/tex]
So initially it will form precipitate and with excess of ammonia it will form soluble product.
