Formulae for Nessler’s reagent is : (A) KHgI3 (B) HgI2 (C) K2HgI4 (D) KHg2I2 — JEE Mains Chemistry Past Papers Chemistry Question
Question
Formulae for Nessler’s reagent is : (A) KHgI3 (B) HgI2 (C) K2HgI4 (D) KHg2I2
Answer: C
💡 Solution & Explanation
Nessler's reagent is a mercury (ii) iodide (HgI2) solution in potassium iodide (KI) and potassium hydroxide (KOH). Nessler's reagent: K2HgI4 + KOH It is used for confirmation test of NH4+ ion.
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