Reaction of Potassium Chloride with Nitric Acid

Reaction of Potassium Chloride with Nitric Acid. Put 1 g of sodium 

Repeat the evaporation until a dry residue is obtained two or three times using the same amount of nitric acid as previously, and test the dry residue each time for the presence of the chloride. What do these experiments show Write the equation of the occurring reaction. 

Evaporate the obtained salt with 10 ml of concentrated hydrochloric acid in a water bath until dry. Dissolve a small sample of the dry residue in water and test it with silver nitrate. Explain the phenomena that occur. 

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