The electron gain enthalpy of chlorine is – 349 kJ mol-1 How much energy in kJ is released when 3.55 g of chlorine is converted completely into Cl– ion in the gaseous state.
According to the definition of electron gain enthalpy Cl(g) + e– (g) → Cl– (g) + 349 kJ mol-1 The energy released when 1 mole (= 35.5 g) of chlorine atoms change completely with Cl– (g) = 349 kJ
