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Why does excess ammonia have to be added to copper ions solution to obtain the deep blue complex of copper tetra amine?
Wiki User
∙ 15y ago
When excess ammonia is added to a solution of copper(II) ions, a complex will form between the ammonia molecules and copper(II) ions, dissolving the copper hydroxide precipitate that initially forms to form a deep-blue solution, Cu(NH3)42+. The ammonia molecules attach one at a time, and in between each attachment, there is a chemical equilibrium. The more ammonia is added, the more complex is formed, as the equilibrium is pushed to the product side. The blue color is the result of the complex absorbing light in the visible light spectrum, and having a concentration high enough for the eyes to detect.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoIf you take a solution containing copper ions and add lots of ammonium hydroxide to it, you do in fact get a tetraamminecopper complex.
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Add an excess of potassium iodide to copper sulphate solution how much is excess?
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What is observe when aqueous ammonia is added in excess to a silver chloride solution?
The white precipitate of silver chloride will dissolve when aqueous ammonia is added.
What happens when EDTA is added to a solution of ammonia and copper sulphate?
The water soluble copper sulfate produces Cu(II) ions in solution. The soluble ammonium hydroxide produces ammonium ions and hydroxide ions in solution in equilibrium with ammonia and water. NH4OH(aq) ↔ NH3(aq) + H2O(l) The ammonia molecules react with the cooper ion to produce a complex ion of Cu(II) coordinated with four ammonia molecules. Cu2+(aq) + 4 NH3(aq) → [Cu(NH3)4]2+(aq) That complex ion in turn associates with a water molecule and the sulfate ion resulting in the products of the overall reaction. CuSO4(aq) + 4 NH4OH(aq) → Cu(NH3)4SO4H2O(s) + 3 H2O(l)
Copper reacts with sodium hydroxide?
Copper metal itself does not react with sodium hydroxide. But when NaOH is added to a solution of copper ions, it would form a light blue precipitate, which is copper(II) hydroxide, and will NOT dissolve with the excess alkali.
How do you get rid of excess copper from the body?
I recently had a hair annalysis done and copper was off the charts. How do I get rid of the excess copper?
What happens when ammonia is added to copper sulfate?
When Ammonia solution is added to Copper sulphate, at first a precipitate of Copper hydroxide is formed. If excess ammonia is added, finally a deep bluish solution of Tetraamine Copper(II) Sulfate is formed
Add an excess of potassium iodide to copper sulphate solution how much is excess?
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Where is the excess copper from after adding zinc to copper sulfate?
The "excess" metallic copper produced by adding zinc metal to a copper sulfate solution comes from exchanging zinc atoms from the metal for copper atoms from the copper sulfate solution. During the reaction, the zinc atoms are ionized to cations and the copper cations from the solution are reduced to neutral atoms.
How can you determine the stoichiometry of cuprammonium ion using partition coefficient between water and chloroform?
take a aqueous solution cupric salt like copper sulfate , add excess of ammonia to it , as the complex will be formed the color will be deep blue , now add chloroform to it as only ammonia will be soluble in it , ammonia will go in the chloroform layer , now separate the layers using a seperatory funnel and titrate both the layers by using a base and indicator , by taking the difference u will no the amount of copmplexed ammonia and can determine the formula of the copmlex , the answer will be near to 4 molecules of ammonia per ion of copper .
What is observe when aqueous ammonia is added in excess to a silver chloride solution?
The white precipitate of silver chloride will dissolve when aqueous ammonia is added.
What happens when EDTA is added to a solution of ammonia and copper sulphate?
The water soluble copper sulfate produces Cu(II) ions in solution. The soluble ammonium hydroxide produces ammonium ions and hydroxide ions in solution in equilibrium with ammonia and water. NH4OH(aq) ↔ NH3(aq) + H2O(l) The ammonia molecules react with the cooper ion to produce a complex ion of Cu(II) coordinated with four ammonia molecules. Cu2+(aq) + 4 NH3(aq) → [Cu(NH3)4]2+(aq) That complex ion in turn associates with a water molecule and the sulfate ion resulting in the products of the overall reaction. CuSO4(aq) + 4 NH4OH(aq) → Cu(NH3)4SO4H2O(s) + 3 H2O(l)
What would be observed when a fresh precipitate of silver chloride is treated with excess ammonia solution?
When you treat silver chloride with excess ammonia solution, Diamine silver (I) chloride is formed . The reaction involved is- AgCl + NH(3) --->Ag( (NH(3)) 2)(+) + Cl(-).What you will observe is that AgCl is insoluble, but after adding ammonia it becomes soluble because of above reaction.
What is secreted by the kidney?
The kidneys secrete urine as a waste product. Urine is a solution composed of water, urea, ammonia, bicarbonate and excess electrolytes.
What happens when excess hydroxide solution is added to copper II sulphate solution?
it fizzes up like poo and wee in ur body when people say ur sexy and ur nipples r great this is said when hydroxide solution is added to copper II sulphate solution
Copper reacts with sodium hydroxide?
Copper metal itself does not react with sodium hydroxide. But when NaOH is added to a solution of copper ions, it would form a light blue precipitate, which is copper(II) hydroxide, and will NOT dissolve with the excess alkali.
If you used nitric acid to dissolve copper how could you remove the copper nitrate?
Heat the liquid to boil off excess water and the copper nitrate will crystalise out of the solution as it cools. Then filter to separate the crystals from the liquid.
How do you get rid of excess copper from the body?
I recently had a hair annalysis done and copper was off the charts. How do I get rid of the excess copper?
