Answer to Question #62286 in General Chemistry for Taylor

Question

Calculate the heat change of calories to condense 10.0 g of steam at 100 oC, and determine whether heat is absorbed or released

Answer 1

Enthalpy of vaporization for water is 2260 kJ/kg. Thus, the amount of RELEASED heat will be Q = r*m = 2260 kJ/kg*0.010 kg = 22.6 kJ or 5.4 kcal.