Chemistry · THERMODYNAMICS

At temperature \( T \), the electron gain enthalpy (\( \Delta_{eg}H^\ominus \)) is related to the electron affinity (\( A \)) by which of the following expressions?

1. A
   \( \Delta_{eg}H^\ominus = -A + \frac{5}{2}RT \)
2. B
   \( \Delta_{eg}H^\ominus = A - \frac{3}{2}RT \)
3. C
   \( \Delta_{eg}H^\ominus = -A - \frac{5}{2}RT \)
4. D
   \( \Delta_{eg}H^\ominus = -A + RT \)