Question:medium

C(s) + 2H$_2$(g) $\rightarrow$ CH$_4$(g); $\Delta H = -74.8 \, \text{kJ mol}^{-1}$
Which of the following diagrams gives an accurate representation of the above reaction?

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For exothermic reactions, the products are lower in energy than the reactants, and the enthalpy change (\(\Delta H\)) is negative. The energy profile typically shows a downward slope from reactants to products.
Updated On: Nov 26, 2025