## Chemistry: The Molecular Science (5th Edition)

$A_{2} + 4 BC_{2} → 4 C_{2} + 2 AB_{2}$
By observing the reaction, we note that in reactants: A is of form $A_{2}$ B and C are of form $BC_{2}$ and the ratio of A:BC is 1:4 In products, we note: A and B of the form $AB_{2}$ C of the form $C_{2}$ and the ratio of AB:C is 4:2