Question detail
What is the main environmental concern associated with the combustion of alkanes?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Alkanes
Question
- A. Formation of ozone
- B. Release of sulfur dioxide
- C. Production of carbon dioxide
- D. Emission of nitrogen oxides
Answer
Production of carbon dioxide
Explanation
The combustion of alkanes produces carbon dioxide, a greenhouse gas that contributes to global warming and climate change, making it a significant environmental concern.
Common mistake
Incorrect Equation for Combustion
Students often write the equation for the complete combustion of alkanes incorrectly, such as CnH2n + O2 → CO + H2O instead of CnH2n + O2 → nCO2 + nH2O.
To fix this, remember that the complete combustion of alkanes produces carbon dioxide and water. Use the formula: CnH2n + O2 → nCO2 + nH2O. For example, for butane (C4H10), the equation is C4H10 + 6.5O2 → 4CO2 + 5H2O.
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