On passing a gas, ‘X’, through Nessler’s reagent, a brown pr... | Chemistry | SolveeIt

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

$\text{H}_2\text{S}$

$\text{CO}_2$

$\text{NH}_3$

$\text{Cl}_2$

Answer

$\text{NH}_3$

Explanation

Nessler’s Reagent Reaction:
$2K_2HgI_4 + NH_3 + 3KOH \rightarrow Hg_2(NH_3)_2I_2 + 7KI + 2H_2O$

In the reaction above, the formation of a brown precipitate is characteristic of ammonia gas ( $NH_3$ ).

The Correct Answer is: $NH_3$

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