Question

Write the net ionic equation to show the formation of a solid (insoluble ionic compound) when the following solutions are mixed. Write noreaction if no solid forms.

Zn(NO3)2(aq) and Li2S(aq)

Li3PO4(aq) and Zn(NO3)2(aq)

FeCl3(aq) and Na2SO4(aq)

Answer 1

Zn(NO3)2(aq) and Li2S(aq)

Zn(NO3)2(aq) + Li2S(aq) -----------> ZnS(s) + 2LiNO3(aq)

Zn^2+(aq) + 2(NO3)^-(aq) + 2Li^+(aq) + S^2-(aq) -----------> ZnS(s) + 2Li^+(aq) + 2NO3^-(aq)

Zn^2+(aq) + S^2-(aq) -----------> ZnS(s)   net ionic equation

Li3PO4(aq) and Zn(NO3)2(aq)

2Li3PO4(aq) + 3Zn(NO3)2(aq) ------------> Zn3(PO4)2(s) + 6LiNO3(aq)

6Li^+(aq) + 2PO4^3-(aq) + 3Zn^2+(aq) + 6(NO3)^-(aq) -----> Zn3(PO4)2(s) + 6Li^+(aq) + 6NO3^-(aq)

3Zn^2+(aq) + 2PO4^3-(aq) + -----> Zn3(PO4)2(s)   net ionic equation

FeCl3(aq) and Na2SO4(aq) -----> no reaction

2FeCl3(aq) + 3Na2SO4(aq) ----------> Fe2(SO4)3(aq) + 6NaCl(aq)