What causes the color to fade in the blue solution?

However, no copper ions enters in the electrolyte from anode. Thus concentration of copper ions goes on decreasing. This result in fading of blue colour. When copper ions completely finish the electrolyte becomes colourless.

Why does the colour of copper sulphate fade?

Answer: When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.

Why does the blue colour copper sulphate solution start fading and become Colourless when a strip of zinc metal is placed in?

Zinc displaces copper from copper sulphate compound so that copper is set free. The blue colour of copper sulphate solution fades due to the formation of zinc sulphate which is colourless. This displacement reaction takes place because zinc is more reactive than copper.

Why does the blue colour of copper chloride?

During electrolysis the ions present in the electrolyte are H+ and OH- from water and Cu2+ and Cl- from copper(II) chloride. Oxygen from OH- ions is formed. Copper Chloride solution is blue in color.

Why is the blue colour of copper sulphate solution slowly discharged when a rod of zinc is dipped in it?

The blue colour of copper sulphate solution is discharged when a rod of zinc is deppid in it. Zinc lies below copper in the electrochemeical series and can therefoe, release electrons to the Cu2+ ions . As a result Zn is oxidised whileCu(2+) ions are reduced.

What is the colour of zinc sulphate?

colourless
It was historically known as “white vitriol”. Zinc sulfate and its hydrates are colourless solids.

Why is the blue colour of the AQ copper sulphate does?

The blue colour of copper ions fades due to decrease in Cu+2 ions and finally the solution becomes colourless as soon as Cu+2 ions are finished.

When zinc rod is placed in copper sulphate solution the blue colour of the solution starts fading?

Placing a Zinc rod in a CuSO4 solution will undergo a reaction according to which Zn will dissolve because it reduces the Cu2+ ions to the elemental metal. Due to which, the blue color will fade away and the copper metal will get deposited.

Why does the blue colour of copper sulphate solution fade away gradually during electrolysis?

The blue colour of electrolyte is due to the presence of copper ions in it. As the electrolysis is . carried out, the copper ions discharge at the cathode. This result in fading of blue colour.

What happens to the colour of copper II chloride during electrolysis?

A brown/black substance forms at the negative electrode (cathode)  where the positive copper ions discharge during electrolysis . The copper chloride solution slowly decolourised during the electrolysis  as the copper ions come out of solution .

When in the blue solution of copper sulphate zinc strip is dipped after some time the colour change to?

=> When zinc is added to copper sulphate solution, then the zinc metal displaces copper from copper sulphate to form zinc sulphate. This happens because zinc is more reactive than copper. CuSO4 solution has a blue colour while ZnSO4 solution is colourless.

Why does the colour of copper sulphate solution change when an iron nail is dipped in it?

Iron lies above in the reactivity series and thus more reactive than copper. As a result, the more reactive metal (iron) displaces a less reactive metal (copper) from its salt solution (copper sulphate solution). Hence, the change in color.