Question

Which of the these is a balanced chemical equation?

A) CO(g) + O2(g) → CO2(g)
B) CO(g) + 2O2(g) → 2CO2(g)
C) 2CO(g) + O2(g) → 2CO2(g)
D) 2CO(g) + 2O2(g) → 2CO2(g)

Answer 1

Answer: C.

This is because the atoms on either side of the equation in all the other solutions are not equal.

Answer 2

C) 2CO + O₂ → 2CO₂

Step-by-step explanation:

The equation C is correct.

2CO + O₂ → 2CO₂

This equation have four oxygen atom and two carbon atoms on both side of equation. So it is correctly balanced.

All others are incorrect:

A) CO + O₂ → CO₂

this is incorrect because there are three oxygen atoms on left while two atoms on right.

B) CO + 2O₂ → 2CO₂

this is incorrect because there are five oxygen atoms on left while four atoms on right.

D) 2CO + 2O₂ → 2CO₂

this is incorrect because there are six oxygen atoms on left while four atoms on right.