Answer :
Aqueous potassium chloride reacts with calcium nitrate to produce calcium chloride and potassium nitrate.
Both the products formed are soluble in water. Thus all the ions remain in the aqueous medium, therefore this is not a metathesis reaction.
Calcium chloride is an ionic compound used for the treatment of hypocalcemia and hyperkalemia, and as an antidote to magnesium intoxication due to overdosage of magnesium sulfate. Calcium chloride is an ionic compound of calcium and chlorine. It is highly soluble in water and it is deliquescent.
Treatment with food grade calcium chloride helps extend the shelf life of a wide variety of food products while maintaining desirable texture and flavor properties. It is used in salt processing to add a salty taste to pickles and other foods without increasing sodium content.
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