Question

what is lattice enthalpy? calculate the lattice enthalpy of sodium chloride by using 30rn- Haber cycle​

Answer 1

Explanation:

The lattice energy is the energy required to dissociate one mole of an ionic compound to its constituent ions in the gaseous state. It is a measure of the cohesive forces that bind ions. Lattice energy is relevant to many practical properties including solubility, hardness, and volatility.

It can be calculated via-

→ ∆U = ∆H - p∆Vm ←

Here,

∆U= Molar lattice energy,

∆H= Molar lattice enthalpy,

∆Vm= Change of the volume per mole,

p= Outer pressure.