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) The... 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.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The complete combustion of methane in oxygen can be represented by the equation:
methane+oxygen→water+carbon dioxide
Step 2
Give the reason why carbon and carbon monoxide are produced in the incomplete combustion of methane.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
In incomplete combustion, there is a limited supply of oxygen available. This causes not all methane to fully react with oxygen, leading to the formation of carbon (soot) and carbon monoxide (a toxic gas) instead of just carbon dioxide.
Step 3
Name the fraction in Figure 7 that is used to surface roads.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The fraction in Figure 7 that is used to surface roads is 'bitumen'.
