question archive Complete and balance each of the following equations
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Complete and balance each of the following equations. If no reaction occurs, write NOREACTION. Express your answer as a chemical equation. Identify all of the phases in your answer.
1) KCl (aq) + CaS (aq) -->
2) CrBr2 (aq) + Na2CO2 (aq) -->
3) NaOH (aq) + FeCl3 (aq) -->
4) NaCl (aq) + Hg2(C2H3O2)2 (aq) -->
5) (NH4)2SO4 (aq) + SrCl2 (aq) -->
6) NH4Cl (aq) + AgNO3 (aq) -->
To solve these problems, swap the anions and cations:
If there is at least one insoluble product, it will precipitate out as a solid and the reaction will occur.
If all the products are soluble, then no reaction occurs.
1) KCl (aq) + CaS (aq) --> NO REACTION (K2S and CaCl2 are soluble)
2) CrBr2 (aq) + Na2CO3 (aq) --> CrCO3 (s) + 2 NaBr (aq)
3) 3 NaOH (aq) + FeCl3 (aq) --> Fe(OH)3 (s) + 3 NaCl (aq)
4) 2 NaCl (aq) + Hg2(C2H3O2)2 (aq) --> Hg2Cl2 (s) + 2 Na(C2H3O2) (aq)
5) (NH4)2SO4 (aq) + SrCl2 (aq) --> SrSO4 (s) + 2 NH4Cl (aq)
6) NH4Cl (aq) + AgNO3 (aq) --> AgCl (s) + NH4NO3 (aq)