The heat of solution of LiCl is -37.1 kJ/mol, and the lattice energy of LiCl(s) is 828 kJ/mol. Calculate the total heat of hydration of 1.00 mol of gas phase Li⁺ ions and Cl^- ions. A) -865 kJ B) -791 kJ C) 791 kJ D) 865 kJ E) None of these.

Question

Quizplus · Accepted Answer

The total heat of hydration is the sum of the heat of solution and the lattice energy. Therefore, the total heat of hydration of 1.00 mol of gas phase Li+ ions and Cl- ions is -37.1 kJ/mol + 828 kJ/mol = -791 kJ/mol.

The Heat of Solution of LiCl Is -37