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Why does white anhydrous copper sulphate turn blue when water is added?
It turns blue because copper forms blue crystals when in solution. As soon as the water evaporates, there's nowhere for the copper to be in "solution", so it loses its colour. When water is added again, the crystals regain the "solution" state and turn blue!
What happens When is bromine is added to cyclohexane?
When bromine is added to cyclohexane, bromination of the cyclohexane molecule may occur. This involves the substitution of a hydrogen atom in the cyclohexane ring with a bromine atom. This reaction can result in the formation of a new compound with bromine substituents on the cyclohexane ring.
Why colour of copper sulphate solution changes to light green when iron filings are added?
The color change occurs because the iron filings react with copper sulfate, forming iron sulfate and copper. This reaction results in a displacement reaction, where the iron displaces the copper in the compound. This changes the chemical composition of the solution, resulting in a light green color.
What happens when water is added to anhydrous copper II sulphate?
When water is added to anhydrous copper (II) sulfate, it will undergo an exothermic reaction where the compound absorbs water molecules to form hydrated copper (II) sulfate. The anhydrous copper (II) sulfate changes color from white to blue as it forms the hydrate.
What is the colour change before and after Aqueous ammonia is added to a test tube containing a precipitate of copper II hydroxide and the precipitate dissolves?
The precipitate of copper II hydroxide is initially blue-green. When aqueous ammonia is added, the precipitate dissolves to form a deep blue solution due to the formation of a complex ion called tetraamminecopper (II) complex.
When copper sulfate is added to water it .......to form a?
Why does copper sulfate change its colour when water is added
What is the colour of the solution if zinc is added to copper sulphate solution?
No colour
What colour does water change anhydrous copper sulfate?
When water is added to anhydrous copper sulfate, it forms copper (II) sulfate pentahydrate, a blue crystalline solid. So, the color change observed is from white (anhydrous) to blue (pentahydrate) when water is added.
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 hydrogen gas made when copper carbonate is added to sulfuric acid?
No.
What happens when copper is added to concentrated sulfuric acid and heated gently?
copper sulphate and hydrogen is released.
Is copper hydrogen carbonate soluble in water?
Yes, but copper hydroxide will precipitate.
What happens when sodium hydroxide is added to copper oxide the colour of precipitate?
When sodium hydroxide is added to copper oxide, a blue precipitate of copper hydroxide is formed. The color of the precipitate is due to the formation of copper ions in solution.
What colour is pure water when anhydrous copper sulphate is added and is there a soild residue?
Anhydrous copper sulfate solid is white. When it is added to water, it dissolves and the solution of aqueous copper sulfate becomes blue.
What happenes when hydrochloric acid is added to a copper?
Absolutely no reaction, that's because copper is less active than hydrogen. :) )
Copper sulphate add to sodium hydroxide result colour?
When copper sulfate is added to sodium hydroxide, a blue precipitate of copper hydroxide is formed. The color change observed is from the initial blue color of copper sulfate to the blue precipitate of copper hydroxide.
What is observed when copper oxide is added into excess dilute sulphuric acid?
When copper oxide is added into excess dilute sulphuric acid, it reacts to form copper sulfate and water. Additionally, hydrogen gas is evolved during the reaction.
