Chemistry problems dealing w/ dissolution equations PLEASE HELP!!!

Question

1. Write balanced chemical equation, write the overall ionic equation, identify the spectator ions and possible precipitates, and write the net ionic equation for each of the following reactions.

a) mercury (II) chloride (aq) potassium sulfide (aq) -->

b) sodium carbonate (aq) calcium chloride (aq) --->

c) copper (II) chloride (aq) ammonium phosphate (aq) -->

THANK YOU SO MUCH!!!

Answer 1

a) mercury (II) chloride (aq) potassium sulfide (aq) -->

HgCl2(aq) & K2S(aq) --> HgS (s) & 2 KCl(aq)

(Hg+2 & 2 Cl-) & (2 K+ & S2-) --> HgS (s) & 2 (K+ & Cl-)

Hg+2  & S2-   --> HgS (s)

spectator ions : K+1 & Cl-1

b) sodium carbonate (aq) calcium chloride (aq) --->

Na2CO3(aq) & CaCL2 (aq) --> 2 NaCl (aq) & CaCO3 (s)

(2Na+& CO3-2 (aq) & (Ca+2 & 2 Cl-) (aq) --> 2 (Na+ & Cl-) (aq) & CaCO3 (s)

(Ca+2 & CO3-2 --> CaCO3 (s)

spectator ions : Na+ & Cl-

c) copper (II) chloride (aq) ammonium phosphate (aq) -->

3CuCl2 (aq) & 2(NH4)3PO4(aq) --> Cu3(PO4)2 (s) & 6 NH4 Cl (aq)

3(Cu+2 & 2Cl-) (aq) & 2[3 NH4+ & PO4)-3(aq) --> Cu3(PO4)2 (s) & 6 (NH4+ &  Cl- )(aq)

3 Cu+2  & 2 (PO4)-3) --> Cu3(PO4)2 (s)

spectatorr ions are NH4+ & Cl-