Mercuric chloride and potassium iodide are crushed together in mortar observation
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Mercuric chloride is HgCl₂
Potassium iodide is KI
HgCl₂ + 2KI → HgI₂ + 2KCl
HgI₂ when crystallizes has red/yellow/orange colour. If KI is in excess, HgI₂ will react with it to form K₂HgI₄
2KI + HgI₂ → K₂HgI₄
Alkali solution of K₂HgI₄ is called Nesler's reagent.
Potassium iodide is KI
HgCl₂ + 2KI → HgI₂ + 2KCl
HgI₂ when crystallizes has red/yellow/orange colour. If KI is in excess, HgI₂ will react with it to form K₂HgI₄
2KI + HgI₂ → K₂HgI₄
Alkali solution of K₂HgI₄ is called Nesler's reagent.
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They react very explosively when brought in contact
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