Nessler's reagent is K2HgI4. Nessler's reagent is an aqueous solution of potassium iodide, mercuric chloride, and potassium hydroxide. It turns into pale brown colour in presence of ammonia.
Formulae for Nessler's reagent is:
Held on 30 Jan 2023 · Verified 6 Jul 2026.
KHg2I2
KHgI3
K2HgI4
HgI2
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