Chapter 19 Chemical Thermodynamics
alpha.chem.umb.edu › chemistry › ch115Chemical Thermodynamics Example 9.2 The element mercury, Hg, is a silvery liquid at room temperature. The normal freezing point of mercury is –38.9ºC, and its molar enthalpy of fusion is ΔHfusion = 2.29 kJ/mol. What is the entropy change of the system when 50.0 g of Hg( l) freezes at the normal freezing point? 1. Convert the g of Hg to moles 2.