Answer:
The correct answer is -494.6 kJ/mol
Explanation:
Find enclosed the Born Haber cycle for MX. The solid compound M (M(s)) is sublimated to M(g) and then it is ionizated to M⁺. The gaseous compound X₂(g) is first dissociated to its atoms in gaseous phase X(g) and then it is ionizated to give X⁻(g). Lattice energy (LE) is the energy required to form 1 mol of MX(s) from its ions in gaseous phase.
From the cycle, we have:
ΔHºf= ΔHsub + IE + ΔHdis + EA + LE
⇒LE= ΔHºf - ΔHsub - IE - 1/2 ΔHdis - EA
LE= -169.7 kJ/mol - (74.4 kJ/mol) - (538 kJ/mol) - 1/2 (157 kJ/mol) - (-366 kJ/mol)
LE= -494.6 kJ/mol
Shows the lowest whole number ratio of ions In an ionic compound
At the point when a response achieves a condition of concoction balance under a specific arrangement of conditions, no further changes in the groupings of reactants and items happen. On the off chance that a change is made in the conditions under which the framework is at harmony, substance change will happen so as to build up another balance. The components that can impact harmony are an adjustment in focus, change in weight (or volume), and change in temperature.
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