Ionic Equation is MgO(s) + 2 H+(aq) + 2NO3- (aq) ---> Mg+2(aq) +2(NO3)2(aq) + H2O(l) if we look at the equation NO3- has not changed it is also in the same physical state so it is a spectator ion Solution Ionic Equation is MgO(s) + 2 H+(aq) + 2NO3- (aq) ---> Mg+2(aq) +2(NO3)2(aq) + H2O(l) if we look at the equation NO3- has not changed it is also in the same physical state so it is a spectator ion.