Question

At 25 °C Cu metal (atomic weight = 63.54 g/mol) has a molar heat capacity of 24.4 J/mol/K. The density of Cu is 8.949 g/cm3 at 0 °C and 8.904 g/cm3 at 100 °C. Assuming that cP is temperature independent, calculate q, w, ΔU and ΔH when 100 g of Cu metal are heated from 0 °C to 100 °C under constant pressure of 1 atm.

Note: ΔH ≈ ΔU for heating of solids and liquids at constant pressure because these materials exhibit very low volume changes on heating.

Answer 1