Use the following data to calculate second electron affinity of oxygen for the process O−(g)+e−(g)→O2−(g). Heat of sublimation of Mg(s)=147.7kJ/mol Ionisation energy of Mg(g) to form Mg2+(g)=2189 kJ/mol Bond dissociation energy for O2 =498.4 kJ/mol First electron affinity of O(g)=−141 kJ/mol Heat formation of MgO(s)=−601.7 kJ/mol lattice energy of MgO=−3791 kJ/mol

Use the following data to calculate second electron affinity of oxygen

1.	Use the following data to calculate second electron affinity of oxygen for the process O−(g)+e−(g)→O2−(g). Heat of sublimation of Mg(s)=147.7kJ/mol Ionisation energy of Mg(g) to form Mg2+(g)=2189 kJ/mol Bond dissociation energy for O2 =498.4 kJ/mol First electron affinity of O(g)=−141 kJ/mol Heat formation of MgO(s)=−601.7 kJ/mol lattice energy of MgO=−3791 kJ/mol
Answer» Use the following data to calculate second electron affinity of oxygen for the process $O^{-} (g) + e^{-} (g) \to O^{2 -} (g)$ . Heat of sublimation of $M g (s) = 147.7 k J / m o l$ Ionisation energy of $M g (g)$ to form $M g^{2 +} (g) = 2189 k J / m o l$ Bond dissociation energy for $O_{2}$ $= 498.4 k J / m o l$ First electron affinity of $O (g) = - 141 k J / m o l$ Heat formation of $M g O (s) = - 601.7 k J / m o l$ lattice energy of $M g O = - 3791 k J / m o l$