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When balancing the equation for methane burning in air, what is the balanced equation?
- a)CH₄ + O₂ → CO₂ + H₂O
- b)CH₄ + O₂ → 2CO₂ + H₂O
- c)2CH₄ + O₂ → 2CO₂ + H₂O
- d)CH₄ + 2O₂ → CO₂ + 2H₂O
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
When balancing the equation for methane burning in air, what is the ba...
The balanced equation for methane burning in air is CH₄ + 2O₂ → CO₂ + 2H₂O. Balancing equations ensures that the number of each type of atom is the same on both sides, in accordance with the law of conservation of mass.
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When balancing the equation for methane burning in air, what is the ba...
Understanding the Combustion of Methane
When methane (CH₄) burns in air, it reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). Balancing this chemical reaction is crucial to reflect the conservation of mass.
The Balanced Equation
The correct balanced equation for the combustion of methane is:
CH₄ + 2O₂ → CO₂ + 2H₂O
Why Option D is Correct
- Reactants:
- 1 molecule of methane (CH₄)
- 2 molecules of oxygen (O₂)
- Products:
- 1 molecule of carbon dioxide (CO₂)
- 2 molecules of water (H₂O)
Balancing the Atoms
- Carbon (C):
- Left: 1 (from CH₄)
- Right: 1 (from CO₂)
- Hydrogen (H):
- Left: 4 (from CH₄)
- Right: 4 (2 from 2H₂O)
- Oxygen (O):
- Left: 4 (2O₂ contributes 4)
- Right: 4 (2 from CO₂ + 2 from 2H₂O)
Conclusion
In option D, all elements are balanced, confirming that mass is conserved during the reaction. This is why CH₄ + 2O₂ → CO₂ + 2H₂O is the correct representation of methane combustion in air.
When methane (CH₄) burns in air, it reacts with oxygen (O₂) to produce carbon dioxide (CO₂) and water (H₂O). Balancing this chemical reaction is crucial to reflect the conservation of mass.
The Balanced Equation
The correct balanced equation for the combustion of methane is:
CH₄ + 2O₂ → CO₂ + 2H₂O
Why Option D is Correct
- Reactants:
- 1 molecule of methane (CH₄)
- 2 molecules of oxygen (O₂)
- Products:
- 1 molecule of carbon dioxide (CO₂)
- 2 molecules of water (H₂O)
Balancing the Atoms
- Carbon (C):
- Left: 1 (from CH₄)
- Right: 1 (from CO₂)
- Hydrogen (H):
- Left: 4 (from CH₄)
- Right: 4 (2 from 2H₂O)
- Oxygen (O):
- Left: 4 (2O₂ contributes 4)
- Right: 4 (2 from CO₂ + 2 from 2H₂O)
Conclusion
In option D, all elements are balanced, confirming that mass is conserved during the reaction. This is why CH₄ + 2O₂ → CO₂ + 2H₂O is the correct representation of methane combustion in air.
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