Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Pb(AcO)_2 + H_2S \longrightarrow PbS \downarrow + 2AcOH$
$Pb(AcO)_2 + H_2S \longrightarrow PbS \downarrow + 2AcOH$
- AFor precipitate formation reaction
- BFor precipitate dissolution reaction
- CFor precipitate exchange reaction
- DFor no reaction
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