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5 Reactions in Aqueous Solution

Precipitate Practice #1

Write balanced molecular and detailed ionic equations. Strike out any spectator ions.


1. Solutions of lead nitrate and potassium chloride are mixed.


Pb(NO3)2(aq) + 2 KCl(aq) PbCl2(s) + 2 KNO3(aq)

Pb2+ + 2 NO3- + 2 K+ + 2 Cl- PbCl2(s) + 2 K+ + 2 NO3-


2. Solutions of sodium sulfate and calcium bromide are mixed.


Na2SO4(aq) + CaBr2(aq) CaSO4(s) + 2 NaBr(aq)

2 Na+ + SO42- + Ca2+ + 2 Br- CaSO4(s) + 2 Na+ + 2 Br-

3. Solutions of aluminum acetate and lithium hydroxide are mixed.


Al(C2H3O2)3(aq) + 3 LiOH(aq) Al(OH)3(s) + 3 LiC2H3O2(aq)

Al3+ + 3 C2H3O2- + 3 Li+ + 3 OH- Al(OH)3(s) + 3 Li+ + 3 C2H3O2-

4. Solutions of iron(III) sulfate and sodium sulfide are mixed.


Fe2(SO4)3(aq) + 3 Na2S(aq) 3 Na2SO4(aq) + Fe2S3(s)

2 Fe3+ + 3 SO42- + 6 Na+ + 3 S2- 6 Na+ + 3 SO42- + Fe2S3(s)

5. Solutions of aluminum sulfate and calcium hydroxide are mixed.


Al2(SO4)3(aq) + 3 Ca(OH)2(aq) 3 CaSO4(s) + 2 Al(OH)3(s)

2 Al3+ + 3 SO42- + 3 Ca2+ + 6 OH- 3 CaSO4(s) + 2 Al(OH)3(s)


6. Solutions of potassium chromate and lead acetate are mixed.


K2CrO4(aq) + Pb(C2H3O2)2(aq) PbCrO4(s) + 2 KC2H3O2(aq)

2 K+ + CrO42- + Pb2+ + 2 C2H3O2- PbCrO4(s) + 2 K+ + 2 C2H3O2-


7. Solutions of silver nitrate and ammonium sulfide are mixed.


2 AgNO3(aq) + (NH4)2S(aq) Ag2S(s) + 2 NH4NO3(aq)

2 Ag+ + 2 NO3- + 2 NH4+ + S2- Ag2S(s) + 2 NH4+ + 2 NO3-


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