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Cu 2+ is blue. Cu2O is reddish; CuO is black, I think.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoA brown... look at a penny.
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What are the colors of silver metal and copper nitrate in water?
The colour of silver metal in water is whiteThe colour of copper nitrate in water is blue (due to the Cu++ ion).
Solution contains metallic ion blue in colour flame test produce blue green colour The solution forms a precipitate when sodium hydroxide is added to the solution What is the ion in the solution?
Most likely copper.
What are two different charges copper can have?
+2 or +1 (For copper ion)
What happens when copper ion solution is combined with lithium ion solution?
It starts a reaction
In which of the following are the symbol and name for the ion given correctly?
copper, Cu+ ,cuprous ion
What flame colour does copper chloride give?
Flame colours depend on just the metal ion. All copper compounds give the same colour, green.
What are the colors of silver metal and copper nitrate in water?
The colour of silver metal in water is whiteThe colour of copper nitrate in water is blue (due to the Cu++ ion).
Solution contains metallic ion blue in colour flame test produce blue green colour The solution forms a precipitate when sodium hydroxide is added to the solution What is the ion in the solution?
Most likely copper.
Why does the water colour change to blue when copper sulphate was added?
Anhydrous copper(II) sulphate is white. When added to water, it forms a solution of CuSO4(aq) which is blue because of the Cu2+ ion, which is itself a transition metal ion.
Is copper a monoatomic or polyatomic ion?
Copper is a monatomic ion.
What colour is sodium ion?
Sodium ion is colorless.
Is copper a negative ion?
No
Is there any noticeable correlation between the metal ion radius and the colour or lack of colour of the ion in solution?
no
What is the number of electrons for copper positive 1 ion?
The number of electrons for copper positive 1 ion is 28.
What compound will be formed between copper ion and carbonate ion?
Copper and carbonate ions form copper carbonate. In practice, copper carbonate usually contains hydroxide ions as well.
what will happen if copper metal is added to copper nitrate?
Copper metal "dissolves" in nitric acid (HNO3). Actually, the nitrate ion oxidizes the copper metal to copper (II) ion while itself being transformed to NO2 gas in the process; the copper (II) ion then binds to six water molecules.
When copper conbines with oxygen to form copper oxide the charge of the copper ion is?
+2
