CAIE IGCSE Chemistry 11.6.2 Combustion of Ethanol Questions

Work through real CAIE IGCSE Chemistry questions to balance ethanol combustion equations and identify carbon dioxide and water products.

Exam points

describe complete combustion of ethanol as reaction with excess oxygen
write and balance the complete-combustion equation for ethanol, producing carbon dioxide and water
identify carbon dioxide and water as the products of complete alcohol combustion
interpret excess oxygen as more oxygen than needed to react with all fuel

[Maximum number: 2]

Ethanol, $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}$ , belongs to the homologous series called alcohols.

Ethanol is a fuel.

Write the chemical equation for the complete combustion of ethanol.

$\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+3 \mathrm{O}_{2} \rightarrow 3 \mathrm{H}_{2} \mathrm{O}+2 \mathrm{CO}_{2}$

species (1) correct equation (1)

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CAIE IGCSE Chemistry 11.6.2 Combustion of Ethanol Questions question 1