The molar heat capacity of ethane is represented in the temperature range 298 K to 400 K

Question:

The molar heat capacity of ethane is represented in the temperature range 298 K to 400 K by the empirical expression Cp,m/ (J K-1 mol-1) = 14.73 + 0.1272(T/K). The corresponding expressions for C(s) and H2 (g) are given in Table 2.2. Calculate the standard enthalpy of formation of ethane at 350 K from its value at 298 K.