On passing a gas, ‘X’, through Nessler’s reagent, a brown precipitate is obtained. The gas ‘X’ is
- $\text{H}_2\text{S}$
- $\text{CO}_2$
- $\text{NH}_3$
- $\text{Cl}_2$
The Correct Option is C
Solution and 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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