Why does the colour of copper sulphate changes to green when iron nail is dipped in it?

If an iron nail is dipped in the copper sulphate solution then iron displaces copper from the copper sulphate because iron is more reactive than copper. Therefore the colour of the copper sulphate solution changes.

What happens when an iron nail is dipped in copper sulphate?

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

Why does iron become brown Colour when iron nail is dipped in copper sulphate solution?

Iron Nail is Fe and blue copper sulphate is CuSO4. When nail is kept in it, Fe being more reactive than copper, it displaces copper from Copper sulphate and forms Ferrous Sulphate which is greenish blue, and the copper displaces deposits around nails giving it colour of reddish brown.

What changes do you observe in the iron nails and colour of copper?

`An iron nail displaces copper from a copper sulphate solution to form a ferrous sulphate solution, due to which the blue colour of the copper sulphate solution fades. Also, copper is deposited on the iron nail, which turns it reddish-brown in colour.

What happens when iron nails are placed in copper sulphate solution Class 8?

When iron nails are placed in a copper sulfate solution, iron displaces copper to form iron sulfate. Slowly, the blue color of the copper sulfate solution turns into green.

What happens when an iron nail is dipped in the solution of copper sulphate write the observations and chemical equations involved in this change?

(a) Chemical reaction of iron nail with copper sulphate solution in water. Thus iron is more reactive than copper. In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).

What happens when you mix copper sulphate and water?

If copper sulphate crystals are added to water then, the particles of copper sulphate crystals loses attraction between them and starts moving continuously and gets mixed up with water. It is called ‘hydrated copper sulphate solution which is having a blue colour.

What change do you observe in iron nail and colour of copper sulphate solution if iron nails are dipped in CuSO4 solution for 15 minutes?

When Iron nail (Ferrum) is dipped in Copper sulphate (CuSO4) there takes reaction between them and coppersulphate change its color from blue to light green. This shows Iron is more reactive than Copper, it can replace Copper from CuSO4.

What changes in colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?

So, there will be a change in the composition and colour of the solution (from blue to light green). And deposition of copper layer on surface of the nail.

When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed in the surface of iron and the colour of copper sulphate solution changes from blue to pale green. The reaction shows that iron is more reactive than copper because it displaces copper from the copper sulphate solution.

What happens when copper sulphate solution is mixed with iron?

Answer. Blue colour of the copper sulphate solution changes into green colour & then iron nail acquires a brownish look. This is because that iron is more reactive than copper. The following chemical reaction takes place in this activity. solution.

What is electroless plating of iron nails?

It is called as electroless plating.when an iron nail is dipped in a solution of CuSO4, it displaces copper from the Solution, which gets deposited or precipitated as a red or red-brown residue. Also the blue colour of the solution gradually fades.

What happens when iron is added to CuSO4?

Iron is a stronger reducing agent than copper and hence it reduces Cu 2+ ion in CuSO4 to metallic copper and itself being oxidized to Fe2+ ion according to the eq : This increase in the conc. of Fe 2+ ion in solution and decrease in the conc. of Cu 2+ in solution causes the blue colour of the solution to fade away and a greenish colour develops.