Question

Write the net ionic equation for the precipitation reaction that occurs when aqueous solutions of ammonium phosphate and nickel(II) bromide are combined. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed leave it blank.

Answer 1

Answer:

$2PO_4^{3-}(aq)+3Ni^{2+}(aq)\rightarrow Ni_3(PO_4)_2(s)$

Explanation:

Hello,

In this case, the molecular chemical reaction is:

$(NH_4)_3PO_4(aq)+NiBr_2(aq)\rightarrow NH_4Br(aq)+Ni_3(PO_4)_2(s)$

Thus, by considering the ionic species we have:

$NH_4^+(aq)+2PO_4^{3-}(aq)+3Ni^{2+}(aq)+Br^-(aq)\rightarrow NH_4^+(aq)+Br^-(aq)+Ni_3(PO_4)_2(s)$

Wherein the ammonium and bromide ions are spectator ions since nickel (II) phosphate is largely insoluble in water, therefore, the net ionic equation is:

$2PO_4^{3-}(aq)+3Ni^{2+}(aq)\rightarrow Ni_3(PO_4)_2(s)$

Best regards.