Answer:
The spectator ions in this equation are :
CrO²⁻₄ and Ba²⁺
Explanation:
Spectator ions : These are the ions which are present in the solution but do not take part in chemical reaction.They are present as such in both reactant as well as product .
In this reaction,
1.H+ and OH- are combined and converted into water (H2O) : Changed to H2O
So , H+ and OH- are not Spectator ions
2.CrO²⁻₄ and Ba²⁺ are unchanged . Present as such in product and reactants
CrO²⁻₄ and Ba²⁺are Spectator ions
