Question

list two observation that are noticed when an iron nail is put inside copper sulphate solution , write chemical equation for the reaction that occurs?

Answer 1

Answer:

observations that are observed when an iron nail is put inside copper sulphate solution are :

1) the color of iron nail changes to brownish

2) the blue color copper sulphate solution fades

Explanation:

chemical equation :

Fe(s) + CuSO4 (aq) → FeSO4(aq) + Cu(s)

Answer 2

Answer:

The color of copper sulfate changes from blue to green. A brown coating of copper is formed on the surface of the iron nail.

Explanation:

• A more reactive metal can displace a less reactive metal from its salt or compound.
• Iron is more reactive than copper according to the reactivity series. It can displace copper from its sulfate salt.
• Copper sulfate solution is blue and it turns green when ferrous sulfate is formed. Copper is deposited at the surface of the nail.
• $CuSO_{4}(aq)+Fe(s)$ → $FeSO_4(aq) + Cu(s)$