In Nessler's reagent, for the detection of ammonia the active species is :

H g_{2} I_{2}

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H^{2 +}

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H g I_{2}^{2 -}

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H g_{4}^{2 -}

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Solution

The correct option is A $H g_{2} I_{2}$
Nessler's reagent is used for the detection of $N H_{3}$ or $N H_{4}^{+}$ ions. The active species in Nessler's reagent is $H g l_{4}^{2 +}$ It gives the brown precipitate or colouration with $N H_{3}$ or $N H_{4}^{+}$ ions.

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Similar questions

In Nessler's reagent for detection of ammonia, the

active species is :

H_{2} C l_{2}

H g I_{4}^{2 -}

N H_{3}

N H_{3}

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