Question

Which of the following is a balanced chemical equation?

1) 2CO(g) + O₂(g) → ₂CO₂(g)
2) 2CO(g) + 2O(g) → ₂CO₂(g)
3) 2CO(g) + O₂(g) → CO₂(g)
4) CO(g) + O₂(g) → CO₂(g)

Answer 1

The balanced chemical equations from the provided options are option 1 (2CO(g) + O₂(g) → 2CO₂(g)) and option 4 (CO(g) + O₂(g) → CO₂(g)). These options correctly represent the conservation of atoms in the reaction.

Step-by-step explanation:

The question you've asked is related to identifying which of the provided chemical equations is balanced. A balanced chemical equation must have the same number of atoms of each element on both sides of the equation. Here's the analysis of your options:

• Option 1: 2CO(g) + O₂(g) → 2CO₂(g) - This equation is balanced because it has the same number of carbon (C) and oxygen (O) atoms on each side.
• Option 2: 2CO(g) + 2O(g) → 2CO₂(g) - This equation is not balanced because it has single oxygen atoms, which do not exist under normal conditions as they are diatomic (O₂).
• Option 3: 2CO(g) + O₂(g) → CO₂(g) - This equation is not balanced because there are two carbon atoms on the left but only one carbon atom on the right.
• Option 4: CO(g) + O₂(g) → CO₂(g) - This equation is balanced as it has one carbon atom and two oxygen atoms on both sides of the equation.

Therefore, option 1 and option 4 are both balanced chemical equations.