The following enthalpy data apply at 298 K (values in kJ mol⁻¹)
CHEMISTRY · Single correct · AP · Chemistry · Thermochemistry · Thermochemistry
Problem
The following enthalpy data apply at 298 K (values in kJ mol⁻¹).
Sublimation of Na(s): +108
Ionization of Na(g): +496
1⁄2 Cl_2(g) → Cl(g): +122
Cl(g) + e⁻ → Cl⁻(g): –349
Formation of NaCl(s) from its elements: –411
Using these data, what is the lattice enthalpy ΔH for
Na⁺(g) + Cl⁻(g) → NaCl(s) ?
(a) +788
(b) −910
(c) −788
(d) −1137