Write the molecular, complete ionic, and net ionic equations for each of the possible reactions.

Question

Possible reactions:

1. Ba(NO3)2 (aq) + KI (aq)
2. Ba(NO3)2 (aq) + NiSO4 (aq)
3. Ba(NO3)2 (aq) + K2CrO4 (aq)
4. AgNO3 (aq) + KI (aq)
5. AgNO3 (aq) + NiSO4 (aq)
6. AgNO3 (aq) + K2CrO4 (aq)

Do any of the net ionic equations show that a reaction does not occur? Circle the complete ionic equations that show that there is no net ionic equation.

Answer 1

The only net ionic equation that shows that a reaction does not occur is #1, as shown below. I don't know how you can circle the net ionic equation because all are spectator ions and there is no net ionic equation.

1). Ba(NO₃)₂(aq) + 2KI(aq) ==> BaI₂(aq) + 2KNO₃(aq) ... molecular equation

Ba²⁺(aq) + 2NO₃^-(aq) + 2K⁺(aq) + 2I^-(aq) => Ba²⁺(aq) + 2I^-(aq) + 2K⁺(aq) + 2NO₃^-(aq) ... ionic eq.

Ba²⁺(aq) + 2NO₃^-(aq) + 2K⁺(aq) + 2I^-(aq) => Ba²⁺(aq) + 2I^-(aq) + 2K⁺(aq) + 2NO₃^-(aq) .. net ionic NR

2). Ba(NO₃)₂ (aq) + NiSO₄ (aq) ==> BaSO₄(s) + Ni(NO₃)₂(aq) ... molecular equation

Ba²⁺(aq) + 2NO₃^-(aq) + Ni²⁺(aq) + SO₄^2-(aq) ==> BaSO₄(s) + Ni²⁺(aq) + 2NO₃^-(aq) .. ionic equation

Ba²⁺(aq) + SO₄^2-(aq) ==> BaSO₄(s) ... net ionic equation

You do the rest. I've given you the molecular equations. You should be able to do ionic and net ionic.

3). Ba(NO3)₂ (aq) + K2CrO4 (aq) ==> BaCrO4(s) + 2KNO3(aq)

4). AgNO3 (aq) + KI (aq) ==> AgI(s) + KNO3(aq)

5). AgNO3 (aq) + NiSO4 (aq) ==> Ag₂SO4(s) + Ni(NO3)₂(aq)

6). 2AgNO3 (aq) + K2CrO4 (aq) ==> Ag2CrO4(s) + 2KNO3(aq)