What is the active species in Nessler's reage | vedclass

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(D) Nessler's reagent is an alkaline solution of potassium tetraiodomercurate$(II)$,which has the chemical formula $K_2[HgI_4]$.In this reagent,the ac

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$[HgI_4]^{2-}$

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(D) Nessler's reagent is an alkaline solution of potassium tetraiodomercurate$(II)$,which has the chemical formula $K_2[HgI_4]$.In this reagent,the active species responsible for the reaction with ammonia is the tetraiodomercurate$(II)$ ion,represented as $[HgI_4]^{2-}$.When it reacts with ammonia,it forms a brown precipitate known as the iodide of Millon's base.

Compound	Nature
$i$. $PbO_2$	$a$. Acidic
$ii$. $Sb_2O_3$	$b$. Basic
$iii$. $GeO_2$	$c$. Amphoteric

What is the active species in Nessler's reagent used for the identification of ammonia?

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Ammonia with excess of $Cl_2$ forms:

Match the following:

Compound Nature

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$ii$. $Sb_2O_3$ $b$. Basic

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