Cesium iodide, CsI, is commonly used as a scintillator in experimental particle physics. The table below lists the vapor pressure of solid CsI at several temperatures. Use the Clausius-Clapeyron equation to calculate the enthalpy of sublimation of CsI.

• A. 86.3 kJ
• B. 195 kJ
• C. 253 kJ
• D. 306 kJ

Answer: (B)