Naphthalene – Red Congo – NaCl mixture?
We have had this experience mix last week and want to know what is happening and what are the substances were separated when we did the experiment. First, put on a plate and place the EVAP dry filter paper with holes on top and an inverted funnel with a cotton in the end and then heated. First Q: What is the purpose of cotton? Second Q: The crystals are formed inside the funnel, is NaCl? or something else? Third Q: There was a strange smell naphthalene? after only red crystals were left in the capsule. Then take the remainder, adding water and a pinch charcoal and cooked and the mixture filtered after … Q: Why do we have to put coal in it? Q: What is this new substance, that we have when have leaked?
Some steam traps cotton. The funnel acts as a capacitor, but remained open, the smoke escape. Heating Dulce NaCl does not melt, much less to vaporize. Naphthalene crystals are formed. The sublimate, and was deposited in the cold fireplace. Yes, naphthalene has a very distinct smell. Because it has become a gas, you have to feel it. Coal is used as an absorption. It absorbs most colors, but leave an inorganic salts. Absorbs Red Cross left the Congo and NaCl. After filtration, has a charcoal residue absorbed Congo red, and filtering of NaCl in the solution.
Cornetite, Congo
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