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The composition of the atmosphere changes when fossil fuels are burned in air - Edexcel - GCSE Chemistry - Question 6 - 2012 - Paper 1
Question 6
The composition of the atmosphere changes when fossil fuels are burned in air. When methane undergoes complete combustion carbon dioxide and water are formed. Writ... show full transcript
Worked Solution & Example Answer:The composition of the atmosphere changes when fossil fuels are burned in air - Edexcel - GCSE Chemistry - Question 6 - 2012 - Paper 1
Step 1
Step 2
Describe some of the problems caused by these products.
Answer
The incomplete combustion of methane produces carbon and carbon monoxide.
- Carbon (Soot): Carbon forms soot, which can accumulate in the atmosphere and lead to air pollution, making the air dirty. 2. Health Issues: Soot can cause respiratory problems and other health issues, affecting individuals with pre-existing conditions, especially children and the elderly. 3. Carbon Monoxide: Carbon monoxide is a toxic gas that can be harmful when inhaled, reducing the amount of oxygen carried by the blood and leading to potentially fatal health effects.
Step 3
Describe how impurities in fossil fuels result in the formation of acid rain.
Answer
Impurities in fossil fuels, particularly sulfur, can lead to the formation of acid rain.
- Burning in Air: When fossil fuels are burned, they release sulfur into the atmosphere.
- Formation of Sulfur Dioxide: This sulfur then reacts with oxygen to form sulfur dioxide (SO₂).
- Dissolving in Rainwater: Sulfur dioxide can dissolve in rainwater, forming sulfuric acid (H₂SO₄), which increases the acidity of precipitation.
- Acid Rain: The resultant acid rain can harm ecosystems, damage buildings, and lead to soil degradation.