Three ionic solids have the following thermodynamic data for dissolution in water at…
CHEMISTRY · Subjective · AP · Chemistry · Compound Structure and Properties · Compound Structure and Properties
Problem
Three ionic solids have the following thermodynamic data for dissolution in water at 25 °C:
• Solid A: lattice enthalpy = +780 kJ mol⁻¹, hydration enthalpy = –820 kJ mol⁻¹
• Solid B: lattice enthalpy = +850 kJ mol⁻¹, hydration enthalpy = –880 kJ mol⁻¹
• Solid C: lattice enthalpy = +900 kJ mol⁻¹, hydration enthalpy = –870 kJ mol⁻¹
Assuming the entropy change upon dissolution is similar for all three solids, rank the solids from greatest to least expected solubility in water and justify your ranking in 2–3 sentences.