Site hosted by Angelfire.com: Build your free website today!

When an ammonium chromate solution is mixed with a barium nitrate solution, a precipitate forms.

1) Choose the correct molecular equation that represents this reaction:

(NH4)2CrO4 (aq) + Ba(NO3)2(aq) BaCrO4(aq) + NH4NO3(s)
2(NH4)2CrO4 (aq) + Ba(NO3)2(aq) BaCrO4(aq) + 2NH4NO3(aq)
2(NH4)2CrO4 (aq) + Ba(NO3)2(aq) 2 (NH4)2CrO4(s) + Ba(NO3)2(s)
(NH4)2CrO4 (aq) + Ba(NO3)2(aq) BaCrO4(aq) + NH4NO3(aq)
(NH4)2CrO4 (aq) + Ba(NO3)2(aq) BaCrO4(s) + 2NH4NO3(aq)

2) Choose the correct complete ionic equation that represents this reaction:

NH4+(aq) + CrO4 2-(aq) + Ba2+(aq) + NO3-(aq) NH4+(aq) + CrO4 2-(aq) + Ba(NO3)2(s)
2NH4+(aq) + CrO4 2-(aq) + Ba2+(aq) + 2NO3-(aq) (NH4)2CrO4 (aq) + Ba(NO3)2(s)
2NH4+(aq) + CrO4 2-(aq) + Ba2+(aq) + 2NO3-(aq) 2NH4+(aq) + + 2NO3-(aq) + BaCrO4(s)
2NH4+(aq) + CrO4 2-(aq) + Ba2+(aq) + 2NO3-(aq) Ba(NO3)2(s) + 2NH4+(aq) + CrO4 2-(aq)

3) Choose the correct net ionic equation that represents this reaction:

2NH4+(aq) + 2NO3-(aq) 2NH4NO3(s)
CrO4 2-(aq) + Ba2+(aq) BaCrO4(s)
2NH4+(aq) + CrO4 2-(aq) (NH4)2CrO4 (aq)
2CrO4 2-(aq) + Ba2+(aq) 2CrO4 2-(s) + Ba2+(s)