Chemistry · THERMODYNAMICS

For the reaction \( 4\text{Fe}(s) + 3\text{O}_2(g) \rightarrow 2\text{Fe}_2\text{O}_3(s) \) at \( 298\text{ K} \), \( \Delta_r H^\circ = -1648\text{ kJ mol}^{-1} \) and \( \Delta_r S^\circ = -549.4\text{ J K}^{-1}\text{mol}^{-1} \). What is the total entropy change \( \Delta S_{\text{total}} \)?

1. \( -5530\text{ J K}^{-1}\text{mol}^{-1} \)
2. \( +4980.6\text{ J K}^{-1}\text{mol}^{-1} \)
3. \( -4980.6\text{ J K}^{-1}\text{mol}^{-1} \)
4. \( +6079.4\text{ J K}^{-1}\text{mol}^{-1} \)