On passing a gas,X,through Nessler's reagent, | vedclass

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(C) Nessler's reagent is an alkaline solution of potassium tetraiodomercurate$(II)$,$K_2[HgI_4]$.When ammonia gas $(NH_3)$ is passed through Nessler's

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$NH_3$

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(C) Nessler's reagent is an alkaline solution of potassium tetraiodomercurate$(II)$,$K_2[HgI_4]$.When ammonia gas $(NH_3)$ is passed through Nessler's reagent,it forms a brown precipitate of iodide of Millon's base,$HgO \cdot Hg(NH_2)I$.The chemical equation is:$2 K_2[HgI_4] + NH_3 + 3 KOH \rightarrow HgO \cdot Hg(NH_2)I + 7 KI + 2 H_2O$Thus,the gas $X$ is $NH_3$.

On passing a gas,$X$,through Nessler's reagent,a brown precipitate is obtained. The gas $X$ is

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