Question

Lithium iodide has a lattice energy of -7.3x10^2kj.mol and heat of hydration of -793kj.mol. Find the heat of solution for lithium iodide.

Answer 1

H solution= H solute + H hydration

H solute = -H lattice

H solution = -(-7.3x10^2) kj/mol + (-793) kj/mol

H solution = -63 kj/mol