Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

The complete combustion equation for ethene is given here: $\text{C}_2\text{H}_4(\text{g}) + 3\text{O}_2(\text{g}) \rightarrow 2\text{CO}_2(\text{g}) + 2\text{H}_2\text{O}(\text{g})$. A selection of bond energies is provided. What is the total energy change when 1 mole of ethene is fully combusted?

  • A$-456$
  • B$-1076$
  • C$-1340$
  • D$-2126$

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