Question

A student placed a crystal of a blue dye at the bottom of a beaker of water After 5 minutes, the crystal disappeared.After 1 day, the solution was blue throughouta. Suggest how you could use a thin glass tube to place the crystal at the bottom of the beaker of water​

Answer 1

Explanation:

The Fe displaces the Cu from CuSO

4

solution in beaker A as Fe is more reactive than Cu.

Therefore the blue colour of the solution changes to green due to the formation of FeSO

4

.

In beaker B, no reaction takes place as Cu being less reactive cannot displace Fe from FeSO

4

solution.

Hence the correct option is C.