Determine if the following reactions will form a precipitate when solutions of t

Question

Determine if the following reactions will form a precipitate when solutions of the reactants are mixed. If a precipitate is formed when the reactants are mixed, write the balanced formula unit, the complete ionic and the net ionic equations for the reactions. If a precipitate does not form when the reactants are mixed, write NR (no reaction) to the right of the arrow. Do not forget to include the physical states of the reactants and products; (aq), (s), (l), (g) in your three solution equations.

Fe(NO3)2 (aq) + K3PO4 (aq) ?

Ba(OH)2 (aq) + Pb(ClO3)2 (aq) ?

Al(ClO4)3 (aq) + Na2SO3 (aq) ?

CaCl2 (aq) + (NH4)2SO4 (aq) ?

LiCH3COO (aq) + MgCl2 (aq) ?

Explanation / Answer

Hi,

A) Precipitate is formed

Balance Equation: 3 Fe(NO3)2(aq) + 2 K3PO4(aq) = Fe3(PO4)2(s) + 6 KNO3(aq)

Complete Ionic Equation: 3 Fe+2(aq)+ 6 NO3-(aq) + 6 K+(aq)+ 2 PO4-3(aq) = Fe3(PO4)2(s) + 6 K+(aq) + 6 NO3- (aq)

Net Ionic Equation: 3 Fe+2 (aq)+ 2 PO4-3(aq) = Fe3(PO4)2(s)

B) No Precipitate is formed

Balance Equation:Ba(OH)2(aq) + Pb(ClO3)2(aq) = Pb(OH)2(aq) + Ba(ClO3)2(aq)

C) No Precipitate is formed

Al(ClO4)3(aq) + Na2SO3(aq) = AlSO3(aq) + Na2(ClO4)3(aq)

D) Precipitate is formed

Balance Equation: (NH4)2SO4(aq) + CaCl2(aq) = CaSO4(aq) + 2 NH4Cl(s)

Complete Ionic Equation: 2 NH4+(aq)+ SO4-2(aq) + Ca+2(aq)+ 2 Cl-(aq) =2 NH4Cl(s) + SO4-2(aq) + Ca+2(aq)

Net Ionic Equation: 2 NH4+(aq)+ 2 Cl-(aq) = 2 NH4Cl(s)

E) LiCH3COO (aq) + MgCl2 (aq) = No Reaction

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