Question

Evaluate Yourself - 4
When a mole of magnesium bromide
is prepared from 1 mole of magnesium
and 1 mole of liquid bromine, 524
kJ of energy is released. The heat of
sublimation of Mg metal is 148 kJ mol-1.
The heat of dissociation of bromine gas
into atoms is 193 kJ mol-1. The heat of
vapourisation of liquid bromine is 31 kJ
mol-1. The firat and second ionisation
energies of magnesium are IE,=737.5 kJ
mol-1 and IEz=1450.5 kJ mol-1 and the
electron affinity of bromine is - 324.5
kJ mol-1. Calculate the lattice energy of
magnesium bromide.​

Answer 1

the temperature and pressure at which the solid, liquid, and vapour phases of a pure substance can coexist in equilibrium.