Question

If the activation energy for the forward reaction is \( 150 \, \text{kJ/mol} \) and that of the reverse reaction is \( 260 \, \text{kJ/mol} \), what is the enthalpy change for the reaction?

• A. \( 410 \, \text{kJ/mol} \)
• B. \( -110 \, \text{kJ/mol} \)
• C. \( 110 \, \text{kJ/mol} \)
• D. \( -410 \, \text{kJ/mol} \)

Hint:

In exothermic reactions, the activation energy of the reverse reaction is higher than that of the forward reaction, resulting in a negative enthalpy change (\( \Delta H \)).