Question

Name one metal which when placed in ferrous sulphate solution will discharge the colour green colour of the solution. Write a chemical equation and state the reasons also.

Answer 1

Potassium (K) is one example which will discharge the gree colour of ferrous sulphate solution as it is more reactive than iron and will displace iron from its salt solution.
$2\text{K}\left(s\right)$ + $\text{Fe}{\text{SO}}_4\left(aq\right)$ $\to$ ${\text{K}}_2{\text{SO}}_4\left(aq\right)$ + $\text{Fe}\left(s\right)$