The newest 19 of 19 written questions. Open one to see it on the real paper.
Sulfur dioxide is an air pollutant. Complete the sentence to describe the reaction that produces sulfur dioxide to cause air pollution. Sulfur dioxide produced from fossil fuels WHICH CONTAIN compounds.
See it on the paper →Ethene reacts with hydrogen to make ethane, C,Hg. Ethane undergoes complete combustion. Write the balanced symbol equation for the complete combustion of ethane.
See it on the paper →Write the word equation for the complete combustion of methane.
See it on the paper →State a different product obtained from the incomplete combustion of methane.
See it on the paper →The equation for the complete combustion of petrol is shown. C 9 H 20 + 14O 2 9CO 2 + 10H 2 O Calculate the maximum volume of carbon dioxide, in dm 3 measured at room temperature and pressure, that is made from 6.4 kg of petrol. The volume of one mole of any gas is 24 dm 3 at room temperature and pressure (r.t.p.). vol...
See it on the paper →State the two products of the complete combustion of octane. and
See it on the paper →Use Table 7.1 to state the two products of the oxidation of gasoline / petrol.
See it on the paper →Identify the gas in the air that reacts with hydrocarbons during combustion.
See it on the paper →Compound C, C 3 H 8 , undergoes complete combustion in oxygen. Construct the balanced symbol equation for this reaction.
See it on the paper →State the name of the gas made in this reaction.
See it on the paper →Write the word equation for the complete combustion of ethanol. + +
See it on the paper →State one other method of making ethanol.
See it on the paper →Methane, CH 4 , is obtained from fractional distillation of petroleum. In the complete combustion of methane, methane reacts with oxygen, O 2 . Carbon dioxide and water are made. Construct the balanced symbol equation for the complete combustion of methane.
See it on the paper →Carbon dioxide is made during the complete combustion of substance R. State the name of the other product made in this reaction.
See it on the paper →Refinery gas also contains butane, C 4 H 10 . Butane burns in oxygen to make carbon dioxide and water. Construct the balanced symbol equation for this reaction.
See it on the paper →State the two products of the complete combustion of a hydrocarbon.
See it on the paper →Use the letters A–E to identify the two products of the complete combustion of a hydrocarbon. and
See it on the paper →State two methods of producing ethanol.
See it on the paper →Fig. 11.3 shows apparatus the student uses to measure the change in mass when ethanol burns in air. burner ethanol balance Fig. 11.3 The mass of the burner and ethanol decreases during the experiment. Suggest why.
See it on the paper →Many candidates wrote just carbon and hydrogen as products in this reaction, not appreciating there is a reaction with oxygen. Others broke down octane into other smaller hydrocarbons like methane and propane.
— Examiner report, May/June 2025, 0654/31 Q8(c)(v) (Cambridge)
Many candidates showed good data handling skills to determine the two products of the oxidation of gasoline/petrol.
— Examiner report, February/March 2025, 0654/32 Q7(a)(iii) (Cambridge)
Water was well known as a product of complete combustion. Hydrogen was the most popular but incorrect response.
— Examiner report, May/June 2022, 0654/33 Q11(b) (Cambridge)
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