4. (a) Methane is a hydrocarbon fuel - Edexcel - GCSE Chemistry Combined Science - Question 4 - 2020 - Paper 1
Question 4
4. (a) Methane is a hydrocarbon fuel.
(i) Complete the word equation for the complete combustion of methane in oxygen.
methane + oxygen → water + carbon dioxide
(... show full transcript
Worked Solution & Example Answer:4. (a) 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 occurs when it reacts with an adequate supply of oxygen, producing water and carbon dioxide as products. This can be written as:
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 the incomplete combustion of methane, there is a limited supply of oxygen available. This insufficient oxygen leads to an incomplete reaction, which can produce carbon (soot) and carbon monoxide as by-products along with water. The balanced equation for this is:
