Answer to Question #268601 in General Chemistry for Pato

Question

Consider a hypothetical ionic compound AB (comprised of A⁺ and B^- ions).

Given the following enthalpy data and using a Born-Haber cycle calculation, predict ΔH_lattice in kJ mol^-1.

A_(s) + B_(s) → AB_(s) Δ_rH = -413 kJ mol^-1

A_(s) → A_(g) Δ_rH = 115 kJ mol^-1

B_(s) → B_(g) Δ_rH = 100 kJ mol^-1

First ionization energy of A_(g) = 516 kJ mol^-1

Electron affinity enthalpy of B_(g) (exothermic) = -374 kJ mol^-1

Answer 1

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