Write the net ionic equation, including phases, that corresponds to the reaction.

Question

Zn(NO3)2(aq)+K2S(aq)———>ZnS(s)+2KNO3(aq)

Answer 1

You can break up all the aqueous solutions into ions, so:

Zn(NO₃)₂(aq)→Zn²⁺(aq)+ 2NO^-₃(aq)

K₂S(aq)→2K⁺ (aq)+ S^2-(aq)

2KNO3(aq)→2K⁺ (aq)+ 2NO^-₃(aq)

Keep ZnS together as it is a solid.

The overall ionic equation is: Zn²⁺(aq)+ 2NO^-₃(aq) + 2K⁺(aq) + S^2-(aq) →ZnS(s) + 2K⁺(aq) + 2NO^-₃(aq)

Eliminate the spectator ions/ions that are on the reactant and product side:

Zn²⁺+ 2NO^-₃ + 2K⁺ + S^2- →ZnS + 2K⁺ + 2NO^-₃

The net ionic equation will be:

Zn²⁺(aq)+ S^2-(aq) →ZnS(s)