Before balancing the chemical reaction, let’s first write the chemical formula of the compounds involved in the reaction.
▪ Aluminum → Group 3A → +3 charge → Al3+
▪ Acetate → polyatomic ion → CH3COO- → -1 charge
▪ Balance the charges of Al3+ and CH3COO- → exchange (criss-cross) the numbers of the charges
aluminum acetate: Al(CH3COO)3
Write a balanced equation to show the reaction of aqueous aluminum acetate with aqueous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate.
A) Al(C2H3O2)2 (aq) + (NH4)2PO4 (aq) → AlPO4 (s) + 2 NH4C2H3O3 (aq)
B) Al(C2H3O2)2 (aq) + (NH3)2PO4 (aq) → AlPO4 (s) + 2 NH3C2H3O3 (aq)
C) Al(CO3)2 (aq) + (NH3)2PO4 (aq) → AlPO4 (s) + 2 NH3CO3 (aq)
D) Al(C2H3O2)3 (aq) + (NH4)3PO4 (aq) → AlPO4 (s) + 3 NH4C2H3O3 (aq)
E) Al(CO2)3 (aq) + (NH4)3PO3 (aq) → AlPO3 (s) + 3 NH4CO2 (aq)
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