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Complete and balance the following double displacement reactions and indicate the formation of any precipitates by considering the solubility of the salts produced

a.  Ba(NO3)2 + Na2SO4 → 
  Ba(NO3)2 + Na2SO4 →  BaSO4 + NaNO3
 Ba(NO3)2(aq) + Na2SO4(aq) →  BaSo4(s) + 2NaNO3(aq)
Ba2+ (aq) + 2NO-3 (aq) + 2Na+ (aq) + SO4-(aq) → BaSO4(s) + 2Na+ (aq) + 2NO3-(aq)
BaSO4→  Ba+ + SO4-

b.  Pb(NO3)2(aq) + 2NH4Cl → 2PbCl2(s) + 2 NH4NO3(aq)
Pb2+(aq)  + NO3-(aq) + , 2NH4+(aq) + 2Cl-(aq) → 2PbCl(s) + 2NH4+(aq) + NO3-(aq)
PbCl→ Pb+ + Cl-

c.  AgNO3 + NaCl → NANO3 + AGCL
AgNO3(aq) + NaCl(aq) ---> AgCl(s) + NaNO3(aq)
Ag+ + NO3- + Na+ + Cl- ---> AgCl(s) + Na+ + NO3- 
Ag+ + Cl- ---> AgCl(s

d.  CaCl2 + K2CO3 →
CaCl2 (aq) + K2CO3 (aq) --> 2KCl (aq) + CaCO3 (s)
2K+ (aq) + 2CO3- (aq) + Ca2+ (aq) + 2Cl- (aq) --> CaCO3 (s) + 2K+ (aq) + 2Cl- (aq) 
CaCO3 (s)  --> 2CO3- (aq) + Ca2+ (aq) 

e.  KOH + Fe(NO3)3 →
3KOH(aq) + Fe(NO3)3(aq)→ Fe(OH)3(s) + 3KNO3(aq) 
3k(aq) + OH(aq) + Fe(aq) + NO(aq)  → FeOH(s) + k(aq) + NO(aq)
FeOH → Fe+ + OH-


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khakaan (1456)
Boston College

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