How can we separate a mixture of iodine, napthalene, chalk dust and saw dust. Write the ans in the form of a flow chart.
To separate a mixture of iodine, naphthalene, chalk dust, and sawdust, you can follow the steps outlined in this flow chart:
1. Start by adding water to the mixture and stir it well.
- Water is added because iodine is soluble in water while naphthalene, chalk dust, and sawdust are insoluble.
2. Filter the mixture through a filter paper.
- This step allows us to separate the insoluble substances (chalk dust and sawdust) from the mixture.
3. Transfer the filtrate (the liquid that passed through the filter paper) into a beaker.
4. Add an organic solvent, such as alcohol or acetone, to the filtrate and stir gently.
- This step is performed because iodine is more soluble in organic solvents than in water. Naphthalene, chalk dust, and sawdust are insoluble in organic solvents.
5. Filter the mixture again through a fresh filter paper.
6. Collect the insoluble residue left on the filter paper.
- This residue will consist of naphthalene, chalk dust, and sawdust.
7. Evaporate the solvent from the filtrate in a separate container.
- This step is performed to obtain the iodine crystals. The solvent evaporates, leaving behind the iodine.
By following this flow chart, you will be able to separate the mixture of iodine, naphthalene, chalk dust, and sawdust.