1) K2SO4(aq) + Pb(NO3)2(aq) → 2KNO3(aq) + PbSO4(s) 2) Ca(C2H3O2)2(aq) + (NH4)2CO3(aq) → CaCO3(s) + 2NH4C2H3O2(aq) 3) 2Li3PO4(aq) + 3BaCl2(aq) → 6LiCl(aq) + Ba3(PO4)2(s)

1. Balance the given molecular equations in aqueous solution with coefficients and phases for each
species If you determine that a species should have a coefficient of 1, you must indicate this with
the "1" label. Do not leave the coefficient space blank for any species in the balanced equation
2 3 4 6 aq K2SO4 Pb(NO3)2KNO3 PbSO4() Ca(C2H302)2 (NH4)2COs( CaCO3()
NH4C2H3O2) LigPOd ) + Bacl2( ) LCI( ) + Ba3(PO4)2( ) MgBr( ) + NaOH( ) Mg(OH)2( ) +
NaBr( )
Solution
K 2 SO 4 (aq)+ Pb(NO 3 ) 2 (aq) ---> KNO 3 (aq) + PbSO 4 (s)
Balance K atoms : K 2 SO 4 (aq)+ Pb(NO 3 ) 2 (aq) ---> 2KNO 3 (aq) + PbSO 4 (s)
This was balanced
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Ca(C 2 H 3 O 2 ) 2 (aq) + (NH 4 ) 2 CO 3 (aq)---> CaCO 3 (s) + NH 4 C 2 H 3 O 2 (aq)
Balance N atoms : Ca(C 2 H 3 O 2 ) 2 (aq) + (NH 4 ) 2 CO 3 (aq)---> CaCO 3 (s) + 2NH 4 C 2 H 3 O 2
(aq)
This was balanced.
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Li 3 PO 4 (aq) + BaCl 2 (aq) ---> LiCl(aq) + Ba 3 (PO 4 ) 2 (s)
Balance Li atoms : Li 3 PO 4 (aq) + BaCl 2 (aq) ---> 3LiCl(aq) + Ba 3 (PO 4 ) 2 (s)
Balance Ba atoms : Li 3 PO 4 (aq) + 3BaCl 2 (aq) ---> 3LiCl(aq) + Ba 3 (PO 4 ) 2 (s)
Balance Li atoms : 2Li 3 PO 4 (aq) + 3BaCl 2 (aq) ---> 6LiCl(aq) + Ba 3 (PO 4 ) 2 (s)
This was balanced

2. --------------------------------------------------------------------------------------------
MgBr 2 (aq)+ NaOH(aq) --> Mg(OH) 2 (s) + NaBr(aq)
Balance Br atoms : MgBr 2 (aq)+ NaOH(aq) --> Mg(OH) 2 (s) + 2NaBr(aq)
Balance Na atoms : MgBr 2 (aq)+ 2NaOH(aq) --> Mg(OH) 2 (s) + 2NaBr(aq)
This was balanced.