Methane is a hydrocarbon fuel - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2020 - Paper 1
Question 4
Methane is a hydrocarbon fuel.
(i) Complete the word equation for the complete combustion of methane in oxygen.
methane + oxygen → water + carbon dioxide
(ii) Th... show full transcript
Worked Solution & Example Answer:Methane is a hydrocarbon fuel - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2020 - Paper 1
Step 1
Complete the word equation for the complete combustion of methane in oxygen.
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Answer
The complete combustion of methane can be expressed as:
methane+oxygen→water+carbon dioxide
Thus, the equation is:
methane+oxygen→water+carbon dioxide
Step 2
Give the reason why carbon and carbon monoxide are produced in the incomplete combustion of methane.
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Answer
Carbon and carbon monoxide are produced during incomplete combustion of methane due to a limited supply of oxygen. When there isn’t enough oxygen available, the methane cannot fully oxidize to carbon dioxide, leading to the formation of these by-products.
Step 3
Name the fraction in Figure 7 that is used to surface roads.
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Answer
The fraction in Figure 7 that is used to surface roads is bitumen.
