Fe3O4(s) + CO(g) →FeO(s) + CO2(g) What coefficients will balance the equation?
A)3, 1, 1, 1
B)1, 1, 3, 1
C)3, 3, 1, 1
D) 2, 2, 6, 4

B

Explanation:

Fe3O4(s) + CO(g) →FeO(s) + CO2(g)

Left side

Fe =3

O = 5

C = 1

Right side

Fe =1

O = 3

C = 1

Balance by finding common denominator

We'll make Fe 3 on the left side

Fe3O4(s) + CO(g) →3FeO(s) + CO2(g)

Left side

Fe =3

O = 5

C = 1

Right side

Fe =3

O = 5

C = 1