Fractional Crystallization/ Fractional crystallization of all salts/ Fractional crystallization of NaCl and NH4Cl.
Fractional crystallization of NaCl and NH4Cl Fractional Crystallization Principle: The impurities are more soluble when the temperature increases in the liquid medium. The refining materials are more likely to get easily in fractions. It is all done due to the solubility differences. Material Required : China dish, wire gauze, filter paper, tripod stand, beaker, stirrer, Bunsen burner, distilled water, funnel, weight machine, solution of two salts which have to separate by crystallization (i.e. NaCl and NH 4 Cl). The technique of preparing NaCl and NH 4 Cl solution or salt solution : Take 4g of NaCl and 7g of NH 4 Cl (you may use the salts of your own choice that you want to crystallize). Add the two in distilled water. And mix them at room temperature. The amount of distilled water is 15mL. Procedure: Take the china dish and pour the solution of two salts into it. · Put the filled china dish on the wire gauze which is already present on a tripod stand. · Turn o