Question

When iron nail was declared in solution kept in a test tube after half an hour it was observed that colour of the solution has changed. the solution in test tube are znso4?

Answer 1

it is not ZnSO4 
it is CuSO4 copper sulphate solution

Answer 2

Answer:

No, the solution is not of $ZnSO_{4}$.

Explanation:

• A more reactive metal has the ability to displace a less reactive metal.
• Iron will only displace those metals (from their salts) that are lower than it in the reactivity series for example copper.
• Zinc is in a higher position than iron and is more reactive.
• Zinc can displace iron from its salt, but iron cannot displace zinc from its salt.
• The possible solutions are:

1. $CuSO_{4}$
2. $SnSO_{4}$
3. $PbSO_{4}$

• Iron can displace the metals from these solutions.