Many modern petrol engines can run on E10 fuel, which contains up to 10% bioethanol instead of pure petroleum-derived petrol.
Suggest two reasons why bioethanol is a more sustainable fuel choice than petrol.
During fuel combustion in internal combustion engines, carbon monoxide is often released alongside 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 completely 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)
3.60 dm33.60\text{ dm}^33.60 dm3 of carbon dioxide is produced when a sample of propane is burned in 7.20 dm37.20\text{ dm}^37.20 dm3 of oxygen.
Calculate the volume of unreacted oxygen.
Give your answer in cm3\text{cm}^3cm3.