Question

prepare a crystals of feso4/Cuso4 through crystallization.( write down the method)​

Answer 1

Answer:

Crystals of FeSO4 can be crystallized by reaction iron particles with dilute sulfuric acid as follows:

Fe + H2SO4--------> FeSo4 + H2

They are synthesized as follows (Always use rubber gloves and safety goggles before carrying out the crystallization process):

1. Soak some clean and dry steel wool in pure acetone for 30 mins. This will help in removing all the traces of grease or oil particles.  
2. Air dry the clean steel wool for 3-4 h.  
3. Place this clean and dried steel wool in a glass beaker. Add 100-150 ml of 30% sulfuric acid to the glass beaker such that it completely covers the steel wool.
4. Allow the beaker to stand. The reaction starts immediately with the release of the hydrogen gas. Do not inhale the gas. After some hours, the steel wool starts dissolving and small greenish ferrous sulfate crystals are seen at the bottom of the beaker.
5. After the steel wool has completely dissolved, filter the solution using a clean filter paper. Collect the filtrate and discard the solids and paper.
6. Then, place the beaker containing the filtrate in the laboratory oven at 70 degrees Celsius and allow the acid to evaporate slowly.
7. Small green FeSO4 crystals are seen at the bottom of the beaker.  

Answer 2

Answer:Crystals of FeSO4 can be crystallized by reaction iron particles with dilute sulfuric acid as follows:

Fe + H2SO4--------> FeSo4 + H2

They are synthesized as follows (Always use rubber gloves and safety goggles before carrying out the crystallization process):

Soak some clean and dry steel wool in pure acetone for 30 mins. This will help in removing all the traces of grease or oil particles.

Air dry the clean steel wool for 3-4 h.

Place this clean and dried steel wool in a glass beaker. Add 100-150 ml of 30% sulfuric acid to the glass beaker such that it completely covers the steel wool.

Allow the beaker to stand. The reaction starts immediately with the release of the hydrogen gas. Do not inhale the gas. After some hours, the steel wool starts dissolving and small greenish ferrous sulfate crystals are seen at the bottom of the beaker.

After the steel wool has completely dissolved, filter the solution using a clean filter paper. Collect the filtrate and discard the solids and paper.

Then, place the beaker containing the filtrate in the laboratory oven at 70 degrees Celsius and allow the acid to evaporate slowly.

Small green FeSO4 crystals are seen at the bottom of the beaker.

Explanation: