What happens when zinc rod is immersed in copper (II) tetraoxosulphate (VI) solution?
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The blue colour of the solution disappears
- Electrons flow from copper to zinc
- The zinc rod remain undissolved
- The copper generate more copper ions
The correct answer is: A
Explanation
When a zinc rod is immersed in a copper (II) tetraoxosulphate (VI) solution (commonly known as copper sulphate solution), a chemical reaction occurs where the zinc displaces the copper ions in the solution, resulting in a reddish-brown coating of copper metal depositing on the zinc rod while the solution loses its blue colour as zinc sulphate is formed; this is a classic example of a displacement reaction.