Chemistry 0620 · IGCSE · Exothermic and endothermic reactions

Exothermic and endothermic reactions — practice question

The equation for the complete combustion of methane is given below. $\text{CH}_4(g) + 2\text{O}_2(g) \rightarrow \text{CO}_2(g) + 2\text{H}_2\text{O}(g)$ Some bond energies are shown in the table. Calculate the enthalpy change for this reaction.

  • A$-1458\,\text{kJ mol}^{-1}$
  • B$-818\,\text{kJ mol}^{-1}$
  • C$-359\,\text{kJ mol}^{-1}$
  • D$+102\,\text{kJ mol}^{-1}$

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI