Many vehicles now use bioethanol instead of standard petrol.
Suggest two reasons why bioethanol is more sustainable than standard petrol.
Like methane, other hydrocarbons can burn to form both carbon monoxide and carbon dioxide.
Explain the process by which carbon monoxide is produced when a hydrocarbon is burned.
Balance the equation for the incomplete combustion of propane to produce carbon monoxide:
‾C3H8(g)+‾O2(g)→‾CO(g)+‾H2O(l) \underline{\quad}\text{C}_3\text{H}_8\text{(g)} + \underline{\quad}\text{O}_2\text{(g)} \rightarrow \underline{\quad}\text{CO(g)} + \underline{\quad}\text{H}_2\text{O(l)} C3H8(g)+O2(g)→CO(g)+H2O(l)Propane burns to form carbon dioxide and water. The equation for the reaction is:
C3H8(g)+5O2(g)→3CO2(g)+4H2O(l) \text{C}_3\text{H}_8\text{(g)} + 5\text{O}_2\text{(g)} \rightarrow 3\text{CO}_2\text{(g)} + 4\text{H}_2\text{O(l)} C3H8(g)+5O2(g)→3CO2(g)+4H2O(l)5.40 dm35.40\text{ dm}^35.40 dm3 of carbon dioxide is produced when a sample of propane is burned in 11.20 dm311.20\text{ dm}^311.20 dm3 of oxygen.
Calculate the volume of unreacted oxygen.
Give your answer in cm3\text{cm}^3cm3.
11 exam-style questions on AQA GCSE Chemistry 9.3 Common atmospheric pollutants and their sources, covering 9.3.1 Atmospheric pollutants from fuels and 9.3.2 Properties and effects of atmospheric pollutants. Each one has a worked solution and a mark scheme showing where the marks go.