Use the following information plus the data given in Tables6.2 and 6.3 to calculate the second electron affinity , E ea2 , of oxygen. Is the O 2 − ion stable in the gas phase? Why is its table in solid MgO? Heat of sublimation for Mg ( s ) = + 147 . 7 kJ / mol Bond dissociation energy for O 2 ( g ) = + 498 . 4 kJ / mol E ea1 for O ( g ) = − 141 .0 kJ / mol Net energy change for formation of MgO ( s ) from its elements = − 6 0 1 . 7 kJ / mol
Use the following information plus the data given in Tables6.2 and 6.3 to calculate the second electron affinity , E ea2 , of oxygen. Is the O 2 − ion stable in the gas phase? Why is its table in solid MgO? Heat of sublimation for Mg ( s ) = + 147 . 7 kJ / mol Bond dissociation energy for O 2 ( g ) = + 498 . 4 kJ / mol E ea1 for O ( g ) = − 141 .0 kJ / mol Net energy change for formation of MgO ( s ) from its elements = − 6 0 1 . 7 kJ / mol
Solution Summary: The author explains the Born-Haber cycle of the formation of ionic solids from its constituent elements.
Use the following information plus the data given in Tables6.2 and 6.3 to calculate the second electron affinity,
E
ea2
, of oxygen. Is the
O
2
−
ion stable in the gas phase? Why is its table in solid MgO?
Heat of sublimation for Mg
(
s
)
=
+
147
.
7 kJ
/
mol
Bond dissociation energy for O
2
(
g
)
=
+
498
.
4 kJ
/
mol
E
ea1
for O
(
g
)
=
−
141
.0
kJ
/
mol
Net energy change for formation of MgO
(
s
)
from its elements
=
−
6
0
1
.
7 kJ
/
mol
Formula Formula Bond dissociation energy (BDE) is the energy required to break a bond, making it an endothermic process. BDE is calculated for a particular bond and therefore consists of fragments such as radicals since it undergoes homolytic bond cleavage. For the homolysis of a X-Y molecule, the energy of bond dissociation is calculated as the difference in the total enthalpy of formation for the reactants and products. X-Y → X + Y BDE = Δ H f X + Δ H f Y – Δ H f X-Y where, ΔHf is the heat of formation.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell