Synthesis of Mercury(II) iodide

Two solutions are prepared by dissolving 5.4 g of mercury(II) chloride in 100 mL of water and 7 g (excess) of potassium iodide in 50 mL of water. The solutions are combined and stirred for 5 minutes, the mixture is then filtered and washed with water. The product may be dried in open air.

HgCl2 + 2 KI = HgI2 + 2 KCl


Combining the solutions

The mixture after complete addition

The dried product

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