Question

When aluminum reacts with phosphorus to form an ionic compound, each metal atom loses electron(s) and each nonmetal atom gains electron(s). There must be aluminum atom(s) for every phosphorus atom(s) in the reaction. Enter the smallest integers possible.

When cesium reacts with bromine to form an ionic compound, each metal atom loses electron(s) and each nonmetal atom gains electron(s). There must be cesium atom(s) for every bromine atom(s) in the reaction. Enter the smallest integers possible.

Calculate the lattice energy of NaF(s) using the following thermodynamic data (all data is in kJ/mol). Note that the data given has been perturbed, so looking up the answer is probably not a good idea. Na(s) ΔHsublimation = 88 kJ/mol Na(g) Ionization energy = 476 kJ/mol F-F(g) Bond energy = 138 kJ/mol F(g) Electron affinity = -348 kJ/mol NaF(s) ΔH°f = -597 kJ/mol kJ/mol

Calculate the lattice energy of InCl(s) using the following thermodynamic data (all data is in kJ/mol). Note that the data given has been perturbed, so looking up the answer is probably not a good idea. In(s) ΔHsublimation = 223 kJ/mol In(g) Ionization energy = 538 kJ/mol Cl-Cl(g) Bond energy = 223 kJ/mol Cl(g) Electron affinity = -369 kJ/mol InCl(s) ΔH°f = -206 kJ/mol kJ/mol Do you expect this value to be larger or smaller than the lattice energy of InBr(s)?

Answer 1