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A Sample Contains Ca3(PO4)2, HgS,AgCl,NH4Cl,and MnS

Question 55

Multiple Choice

A sample contains Ca3(PO4) 2, HgS,AgCl,NH4Cl,and MnS.Identify the precipitate after the addition of 6 M HCl; then H2S and 0.2 M HCl; then OH- to a pH of 8; and then (NH4) 2HPO4 with NH3.


A) Ca3(PO4) 2
B) HgS
C) AgCl
D) NH4Cl
E) MnS

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