Write the balanced NET ionic equation for the reaction when Al(NO₃)₃ and Na₃PO₄ are mixed in aqueous solution. If no reaction occurs, write only NR.

Answer 1

First write the molecular equation:

Al(NO₃)₃(aq) + Na₃PO₄(aq) ==> AlPO₄(s) + 3NaNO₃(aq)

Since a precipitate forms (you would know this from solubility rules), then a reaction has taken place.

Now, write the total ionic equation:

Al³⁺(aq) + 3NO₃^-(aq) + 3Na⁺(aq) + PO₄^3-(aq) ==> AlPO₄(s) + 3Na⁺(aq) + 3NO₃^-(aq)

Finally cancel spectator ions from each side to obtain the balanced NET IONIC:

Al³⁺(aq) + PO₄^3-(aq) ==> AlPO₄(s)