Question

Write the net ionic equation of the following reaction.

Al(NO3)3(aq)+(NH4)3PO4(aq)->AlPO4(s)+3NH4NO3(aq)

Answer 1

Here each reactant and product is a salt so let's break them down into their corresponding anion and cation however since AlPO4 is in solid form, it remains as such because dissociation occurs only in aqueous solution.

Al(NO3)3 $\rightarrow$ Al3+ + 3 NO3-

(NH4)3PO4 $\rightarrow$ 3NH4+ + PO4 3-

NH4NO3 $\rightarrow$ NH4+ + NO3-

Now lets write this for the above reaction

Al3+(aq) + 3 NO3-(aq) + 3NH4+(aq) + PO4 3-(aq) $\rightarrow$ AlPO4 (S) + 3NH4+(aq) + 3NO3-(aq)

The common ion on both sides are cancelled by each other and we get

Al3+(aq) + PO4 3-(aq) $\rightarrow$ AlPO4 (S)

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