How do you obtain pure crystals of sodium chloride from a mixture of sodium chloride and activated carbon powder

add water, dissolve the salt, pour thru a filter paper (saltwater goes thru), then evaporate the water off.

To obtain pure crystals of sodium chloride from a mixture of sodium chloride and activated carbon powder, you can follow these step-by-step instructions:

1. Prepare the mixture: Start by ensuring that the sodium chloride and activated carbon powder are thoroughly mixed together. This can be done by grinding the two substances together using a mortar and pestle.

2. Dissolve the mixture in water: Transfer the mixture into a beaker and add a sufficient amount of water. Stir the solution thoroughly to dissolve the sodium chloride. The activated carbon powder will not dissolve and can be filtered out later.

3. Filtration: Set up a filtration apparatus using a filter funnel and filter paper. Pour the solution through the filter paper to separate the insoluble activated carbon powder from the soluble sodium chloride solution. The activated carbon will stay on the filter paper, and the filtrate will be a clear solution of sodium chloride.

4. Evaporation: Pour the sodium chloride solution into an evaporating dish and place it on a heat source, such as a hot plate or a Bunsen burner. Apply gentle heat and allow the solution to evaporate slowly. As the water evaporates, sodium chloride crystals will start to form.

5. Crystallization: Once the solution has reduced in volume and reached a saturated concentration, remove the evaporating dish from the heat source and allow it to cool down to room temperature. This will promote the growth of larger sodium chloride crystals.

6. Harvesting the crystals: Carefully collect the sodium chloride crystals using a spatula or a similar tool. Avoid touching the crystals with your hands, as this can introduce impurities. You can also use a suction filtration setup or a Buchner funnel to separate the crystals from any remaining liquid.

7. Washing the crystals (optional): If desired, you can wash the sodium chloride crystals with a small amount of cold water to remove any residual impurities. This can be done by adding a small amount of water to the crystals, stirring gently, and then decanting the water.

8. Drying the crystals: Finally, place the sodium chloride crystals on a clean paper towel or filter paper and allow them to air dry. After they are completely dry, transfer them to a clean, dry container for storage.

By following these steps, you should be able to obtain pure crystals of sodium chloride from the mixture with activated carbon powder.

To obtain pure crystals of sodium chloride from a mixture of sodium chloride and activated carbon powder, you can use a process called filtration. Here's a step-by-step guide on how to do it:

1. Prepare your materials: You'll need the mixture of sodium chloride and activated carbon powder, water, filter paper, a funnel, and a beaker or container to collect the filtrate.

2. Set up the filtration apparatus: Fold the filter paper in half, then fold it in half again to form a cone-shaped filter. Place the filter paper inside the funnel, making sure it fits snugly. Place the funnel on top of the beaker or container to collect the filtrate.

3. Wet the filter paper: Pour a small amount of water through the funnel to wet the filter paper. This step is important to ensure a proper filtration and prevent any small particles from passing through.

4. Pour the mixture into the funnel: Carefully pour the mixture of sodium chloride and activated carbon powder into the funnel, making sure it doesn't overflow. The liquid portion (water) will pass through the filter paper, while the solid particles will be retained.

5. Collect the filtrate: Allow the liquid (filtrate) to completely pass through the filter paper into the beaker or container below. This filtrate will contain mostly water and dissolved sodium chloride.

6. Wash the filter residue: After the filtration is complete, you'll notice a residue on the filter paper, which consists of the activated carbon powder. You can rinse this residue with a small amount of water to remove any remaining sodium chloride that may be stuck to it.

7. Evaporate the water: Transfer the filtrate (containing sodium chloride in water) into a separate container and heat it gently to evaporate the water. This can be done by placing the container on a hot plate or using gentle heat from a Bunsen burner. As the water evaporates, sodium chloride crystals will start to form.

8. Collect the sodium chloride crystals: Once all the water has evaporated, you'll be left with pure crystals of sodium chloride. You can use a spatula or clean tweezers to carefully collect these crystals from the container.

It's essential to note that the purity of the obtained sodium chloride crystals will depend on the quality of the original mixture and the filtration process. Hence, it's essential to handle each step with care to obtain purer crystals.