Sodium chloride doesn't react with air; being hygroscopic NaCl absorb water from air.
When zinc is added to sodium chloride, a displacement reaction occurs where the zinc replaces the sodium in the compound. This results in the formation of zinc chloride and sodium being left separate.
When sodium chloride is added to water, it will dissociate into sodium ions and chloride ions. These ions will increase the concentration of solute particles in the solution, lowering the freezing point and increasing the boiling point of the solvent. This property is known as colligative properties.
After 1 413 0C pure sodium chloride is vaporized without any residue.
When a sodium chloride and distilled water solution is evaporated, the water evaporates, leaving behind solid sodium chloride crystals. The crystals are the original salt that was dissolved in the water.
Sodium chloride can be removed from solution by distillation. Boiling a solution of sodium chloride will cause the water to boil off and the sodium chloride to be left behind. If the water vapor is then condensed, the water obtained will be free of sodium chloride.
They separate at the boiling point of water, 100o Celsius, because the water boils away and the sodium chloride is left behind.
Sodium chloride can be separated from its solution in water through the process of evaporation. By heating the solution, the water will evaporate, leaving behind solid sodium chloride. This technique takes advantage of the differences in boiling points between water and sodium chloride to achieve separation.
Not much really happens. The salt (sodium chloride) dissociates into sodium ions and chloride ions in solution. The vinegar (acetic acid) dissociates into hydrogen ions (protons) and acetate ions in solution. The solid salt will most often dissolve in the vinegar. But, that's about it. Now, if you have something like a metal in the salt and vinegar solution, the chloride ions can induce nucleophilic attack on the metal ions, resulting in corrosion of the metal. If you boiled away the water in the solution, you would be left with some proportion of sodium chloride (salt), anhydrous acetic acid, and sodium acetate.
One way to obtain sodium chloride from a mixture of sodium chloride and sulfur without using water is by sublimation. Heating the mixture to a temperature where sulfur sublimes but sodium chloride does not can separate the two components. The sublimed sulfur can be collected separately, leaving behind sodium chloride.
To separate gold from sodium gold chloride, you can use a process called electrolysis. In this process, an electric current is passed through the solution, causing the gold to plate out onto the cathode while the sodium remains in the solution. The plated gold can then be removed and further refined.
The most important is sodium chloride.
Sodium chloride is soluble in water, but zinc carbonate is not. Here is a procedure based on that simple difference in solubility. 1. Place the mixture in water and stir. The sodium chloride will dissolve. 2. Pour it through a filter. The insoluble zinc carbonate will remain on the filter, but the sodium chloride solution will pass through the filter. 3. Allow the water to evaporate from the sodium chloride solution. You are left with pure solid sodium chloride.