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(A) The reaction of mercury$(I)$ nitrate with ammonia is a classic example of a disproportionation reaction where $Hg_2^{2+}$ is converted into metall

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Precipitate formation reaction

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(A) The reaction of mercury$(I)$ nitrate with ammonia is a classic example of a disproportionation reaction where $Hg_2^{2+}$ is converted into metallic mercury $(Hg^0)$ and mercury$(II)$ species $(Hg^{2+})$.This reaction results in the formation of a black precipitate consisting of a mixture of finely divided metallic mercury and an insoluble mercury$(II)$ amido-nitrate complex.Therefore,this is classified as a precipitate formation reaction.

Assign $A, B, C, D$ from the given type of reaction.
$Hg_2(NO_3)_2 + 2NH_3(aq) + H_2O \longrightarrow Hg \downarrow + Hg(NH_2)NO_3 \downarrow + NH_4NO_3$
(Note: The reaction represents the disproportionation of mercury$(I)$ nitrate with ammonia.)

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Assign $A, B, C, D$ from the given type of reaction.$Hg_2(NO_3)_2 + 2NH_3(aq) + H_2O \longrightarrow Hg \downarrow + Hg(NH_2)NO_3 \downarrow + NH_4NO_3$(Note: The reaction represents the disproportionation of mercury$(I)$ nitrate with ammonia.)