CHEMISTRY · Subjective · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties
Problem
The lattice energy of NaBr(s) is 732 kJ mol⁻¹. The hydration enthalpies are −406 kJ mol⁻¹ for Na⁺(aq) and −330 kJ mol⁻¹ for Br⁻(aq). Calculate the enthalpy change for dissolving one mole of NaBr(s) in water at 25 °C and state whether the process is exothermic or endothermic.