Question

In this equation, what should be the coefficients of the reactants and products?

12+0₂-1409
OA the coefficient of lodine is 2, oxygen is 9, and the product is 2
OB. the coefficient of lodine is 9, oxygen is 4, and the product is 2
OC. the coefficient of lodine is 4, oxygen is 9, and the product is 2
OD. the coefficient of lodine is 2, oxygen is 9, and the product is 1

Answer 1

C.) The coefficient of iodine is 4, oxygen is 9, and the product is 2

Step-by-step explanation:

An equation is balanced when there is an equal amount of each element on both sides of a reaction. If the amounts are unequal, you can modify the amount of molecules by adding coefficients.

The unbalanced reaction:

I₂ + O₂ -----> I₄O₉

Reactants: 2 iodine, 2 oxygen

Products: 4 iodine, 9 oxygen

The balanced equation:

4 I₂ + 9 O₂ -----> 2 I₄O₉

Reactants: 8 iodine, 18 oxygen

Products: 8 iodine, 18 oxygen

Remember, coefficients are the numbers placed in front of the molecular formulas. As such, the coefficient of iodine is 4, oxygen is 9, and the product is 2.