Question

LiF is less soluble in water than KF because:

a) LiF is more covalent than KF
b) LiF has higher lattice energy than KF
c) Li+ ions are not extensively hydrated as K+
d) LiF has a higher enthalpy of hydration than KF

Answer 1

b. LiF is less soluble in water than KF because it has higher lattice energy.

Step-by-step explanation:

LiF is less soluble in water than KF because LiF has higher lattice energy than KF. In general, the higher the lattice energy, the less soluble a compound is in water. High lattice energies lead to hard, insoluble compounds with high melting points.

Therefore, option b) LiF has higher lattice energy than KF is the correct answer.