………….. salt solution on reacting with Ammonium hydroxide solution gives a deep blue solution.

Open in App

Solution

Reaction of Copper sulphate with Ammonium hydroxide:
When Copper sulphate (CuSO₄ ) reacts with Ammonium hydroxide (NH₄OH) solution, it forms Copper hydroxide ppt (Cu(OH)₂ which is pale blue in color.
When excess Ammonium hydroxide solutions are added, it converts into [Cu(NH₃)₄]SO₄ a deep blue solution.
${CuSO}_{4} (s) + 2 {NH}_{4} OH (aq) \to Cu {(OH)}_{2} (s) + {({NH}_{4})}_{2} {SO}_{4} (aq) (Copper sulphate) (Ammonium hydroxide) (Copper hydroxide) (Ammonium sulphate) (Blue) (Pale blue ppt .) Cu {(OH)}_{2} (s) + {({NH}_{4})}_{2} {SO}_{4} (aq) + 2 {NH}_{4} OH (aq) \to [Cu {({NH}_{3})}_{4}] {SO}_{4} (s) + 4 H_{2} O (l) (Copper hydroxide) (Ammonium sulphate) (Ammonium hydroxide) Tetraammine copper (II) sulfate Water (Pale blue ppt .) (deep blue solution)$
Final Answer- Copper sulphate (CuSO₄) salt solution on reacting with Ammonium hydroxide solution gives a deep blue solution.

Suggest Corrections

Similar questions

Q. Assertion :We can distinguish between

Z n^{2 +}

and

P b^{2 +}

using ammonium hydroxide solution. Reason: Zinc ions with ammonium hydroxide gives white precipitate of zinc hydroxide which dissolves in excess of ammonium hydroxide. Aqueous solution of lead salt do not show any change on treatment with ammonium hydroxide

When ammonium hydroxide is added to solution B, a plae blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide giving an inky blue solution. What is the cation [positive ion] present in solution B ? What is the probable colour of solution B.

Q13. Which one of the following salt solution on reaction with excess of ammonium hydroxide gives a deep blue solution?

Q. On reacting copper hydroxide with an excess of ammonium hydroxide and ammonium sulphate, we get a deep blue solution. The formula of the solution is :

The solution of which of the following salts will become a deep blue when an excess of ammonium hydroxide solution is added to it?

Join BYJU'S Learning Program