How to Separate Benzoic Acid & Sodium Chloride
- 1). Transfer the sample of benzoic acid and sodium chloride to one of the 250 ml beakers.
- 2). Add 75 ml of water.
- 3). Stir the mixture to dissolve the salt.
- 4). Prepare an ice water bath in the 1-liter beaker. Place the 250 ml beaker in the ice water bath, but without allowing it to tip over or take in water from the ice bath. Continue to stir the mixture.
- 5). Place a piece of filter paper in the funnel, and dampen it slightly so it adheres to the funnel. Place the empty 250 ml beaker beneath it, and pour the mixture through the filter paper in the funnel. The benzoic acid, which did not dissolve, will remain in the filter paper, while the sodium chloride solution will pass through.