Zn(s) + Hg(NO₃)₂(aq) → Zn(NO₃)₂(aq) + Hg(l)
Explanation:
* Zinc (Zn) is more reactive than mercury (Hg). This means zinc can displace mercury from its compound.
* Mercury nitrate (Hg(NO₃)₂) is a soluble ionic compound, meaning it dissolves in water to form ions.
* Zinc nitrate (Zn(NO₃)₂) is also a soluble ionic compound.
* Mercury (Hg) is a liquid metal at room temperature.
What happens during the reaction:
1. When zinc metal is added to a solution of mercury nitrate, the zinc atoms react with the mercury ions (Hg²⁺) in the solution.
2. Zinc displaces mercury from the nitrate compound, forming zinc nitrate.
3. The displaced mercury atoms combine to form liquid mercury, which can be seen as droplets or a thin film at the bottom of the solution.
Observations:
* You will observe the formation of a silvery liquid (mercury) at the bottom of the solution.
* The solution may turn slightly cloudy due to the formation of zinc nitrate.
* The reaction may generate some heat.
Important Note: Mercury is a toxic heavy metal. Avoid contact with mercury and dispose of it properly.
