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Lab

Explanation of Procedure:

1. Weigh out 1 g of aniline and put it into a reaction vial. (note down exact value weighed)
2. The resultant needs to be as soluble as possible in hot solvent and as insoluble as possible in cold solvent therefore you need to add 7.5 ml of water in the reaction vial along with a magnetic stir bar.
3. Add about 95 drops of acetic anhydride to the reaction while drop by drop as the solution stirs.
4. Since soluble impurities stay in the cold solvent after recrystallization, you must cool the mixture in a patch of ice.
5. By using the pump at your table, collect the crude product of the cooled down mixture. Place a filter paper on the funnel and wet it with the solvent prior to adding the mixture. Once all of your mixture is onto the funnel wait until it completely dries up by having all the water sucked out by the pump.
6. Pour de dried product into a 10mL beaker.
7. Take a volumetric flask, add water, and few boiling balls (so that the water does not shoot out of the flask and boils nicely).
8. Heat the flask until the water is boiling then add water into the 10mL beaker of the dried product while stirring so that it can be recrystallized.
9. Cool down the mixture at room temperature for about 5 mins so increase large crystal growth and then place it in a patch of ice once again and let it cool down for another 10 mins.
10. By using suction filtration you will once again use the funnel to collect the crystal wanted that will result from the reaction.
11. Wet the filter paper with the solvent and continue the suction filtration until you are left with another dried product.
12. Put the product onto a watch glass and place it under a heated lamp to let the excessive water present inside the mixture dry out.
13. Reweigh your solid to see how much of it was lost during the experiment and note it down.
14. once it is completely dried take a capillary tube and with the open end, tap your solid into the tube. (roughly...