A manufacturer is selecting a salt for a single-use chemical hand warmer
CHEMISTRY · Single correct · AP · Chemistry · Thermochemistry · Thermochemistry
Problem
A manufacturer is selecting a salt for a single-use chemical hand warmer. The table lists the lattice energies and the sums of hydration enthalpies for four candidate salts.
Salt Lattice energy (kJ mol⁻¹) Hydration enthalpy (kJ mol⁻¹)
(a) NH4NO3 (Salt II)
(b) KCl (Salt IV)
(c) CaCl2 (Salt I)
(d) LiBr (Salt III)