Question

Ni2+(aq) + SO42–(aq) + 2Na+(aq) + S2–(aq) NiS(s) + 2Na+(aq) + SO42–(aq) net ionic equation ?

Answer 1

To get the net Ionic equation we must get rid of spectator ions, I.E. the ions that repeat on either side of the equation.

So...!

$Ni_{2}$$(aq)^{+}$ + $SO_{4}(aq)^2-$ + $2Na(aq)^+$ + $S_{2} (aq)^{2} -$ → $2NiS(s)$ + $2Na(aq)^{+}$ + $SO_{4}(aq)^{2-}$

This becomes the following net ionic.

$Ni_{2}$$(aq)^{+}$ + $S_{2} (aq)^{2} -$ → $2NiS(s)$