Question

Question 5

Fe + O2 - Fe2O3
What should the coefficient for the diatomic oxygen be when this equation is correctly balanced?
A
1
O O O
D
6

Answer 1

Answer: The coefficient for the diatomic oxygen (O2) is 3.

Step-by-step explanation:

To know the coefficient for the diatomic Oxygen, we need to balance the equation.

Fe + O2 -------> Fe2O3

LHS of the equation; Fe = 1 , O2 = 1

RHS of the equation; Fe = 2 , O = 3

∴ Multiply 'Fe' on the LHS of the equation by 4 and O2 by 3

Doing that will give the balance equation which is;

4 Fe + 3 O2 --------> 2 Fe2O3

The coefficient for the diatomic oxygen (O2) as seen from the equation is 3.