Identify the cation in each of the following cases:
Ammonium hydroxide solution when added to solution 'C' gives bluish white precipitate which is soluble in excess.

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Solution

The solution $' C'$ ’ is copper sulfate and hence the cation is ${Cu}^{2 +}$
That is, the reaction of ammonium hydroxide with copper sulfate (or ${Cu}^{2 +}$ cations) solution produces bluish-white precipitate of copper hydroxide, which is soluble in excess of ammonium hydroxide.

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Identify the cation in each of the following cases:Ammonium hydroxide solution when added to solution 'C' gives bluish white precipitate which is soluble in excess.

The solution 'C'’ is copper sulfate and hence the cation is Cu2+That is, the reaction of ammonium hydroxide with copper sulfate (or Cu2+ cations) solution produces bluish-white precipitate of copper hydroxide, which is soluble in excess of ammonium hydroxide.

Identify the cation in each of the following cases:
Ammonium hydroxide solution when added to solution 'C' gives bluish white precipitate which is soluble in excess.

The solution $' C'$ ’ is copper sulfate and hence the cation is ${Cu}^{2 +}$
That is, the reaction of ammonium hydroxide with copper sulfate (or ${Cu}^{2 +}$ cations) solution produces bluish-white precipitate of copper hydroxide, which is soluble in excess of ammonium hydroxide.