Answer: BaI2(aq) + 2KBr(aq) → BaBr2(S) + 2KI(aq).
This is the complete balanced chemical equation of the reaction. Here we witness a double displacement chemical reaction. Here both the reactants have produced new substances by exchanging ions between themselves. The properties of the products vary totally from the associated reactants.
By balancing the equation we ensure that the mass conservation law is maintained. In Chemistry, unbalanced chemical equations do not support the law of conservation.