K2[HgI4] detects the ion/group:

Engineering

Chemistry

d Block Elements and Properties

Compounds of d Block Elements

Question

K₂[HgI₄] detects the ion/group:

NH₂^–

NH₄⁺

AICI₃

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

K₂[HgI₄] is known as Nessler's reagent. It is used for the detection of ammonia.

2 K₂[HgI₄]+3KOH+NH₃⟶ [HgO.Hg(NH₂)I]+ 7KI + 2H₂O

The colour of Nessler's the reagent changes to brown in basic medicerm.

∴ option ( C ) is correct.

Please subscribe our Youtube channel to unlock this solution.