What happened to the mercury (I) chloride precipitate when you added ammonia? A) it dissolved B)...
What happened to the mercury (I) chloride precipitate when you added ammonia? A) it dissolved B) it turned yellow C) it turned black D) it turned white
Homework Answers
When mercury (I) chloride precipitate, Hg2Cl2(s) is treated with ammonia, NH3, redox reaction takes place to form grey/black colored precipitate of mercury(Hg) is formed along with the formation of a white precipitate of HgClNH2(s).
The balanced equation is:
Hg2Cl2(s) + 2NH3(aq) -----> HgClNH2(s) + Hg(s) + NH4Cl(aq)
Although HgClNH2(s) is a white precipitate, the solution turns black/grey due to the formation of black/grey colored mercury (Hg).
Hence the correct answer is: (C): It turned black.
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