Calculating ?H for Temperature and Phase ChangesCalculate
Chapter 11, Problem 3PE(choose chapter or problem)
Problem 3PE
Calculating ΔH for Temperature and Phase Changes
Calculate the enthalpy change upon converting 1.00 mol of ice at –25 °C to steam at 125 °C under a constant pressure of 1 atm. The specific heats of ice, liquid water, and steam are 2.03, 4.18, and 1.84 J/g-K, respectively. For H2O, ΔHfus = 6.01 kJ/mol and ΔHvap = 40.67 kJ/mol.
What is the enthalpy change during the process in which 100.0 g of water at 50.0 °C is cooled to ice at –30.0 °C? (Use the specific heats and enthalpies for phase changes given in Sample Exercise 11.3.)
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