Question

Fill the following observation table.

Observation Table:

Sr. No.	Experiment procedure	Observations
1	Colour of $CuS{O}_4$ soln. before the experiment.
2	Colour of iron nail before the experiment.
3	Colour of $CuS{O}_4$ soln. after the experiment
4	Colour of iron nail after the experiment.

Answer 1

The displacement reaction is taking place between ${CuSO}_4$ and $Fe$ as iron is more reactive than copper.

$Fe+{CuSO}_4\left(aq\right)={FeSO}_4\left(aq\right)+Cu$

silver blue colour light green reddish brown

colour

Observations.

$1.$ Colour of ${CuSO}_4$ solution before the experiment is blue.

$2.$ Colour of iron nail before the experiment is silver.

$3.$ Colour of ${CuSO}_4$ is changed from due to light green of ${FeSO}_4$ after the experiment.

$4.$ The silver colour of iron nail is changed to reddish brown colour due to coating of $Cu$ metal on the iron nail.