In one or two sentences explain why assuming specific heat c

In one or two sentences, explain why assuming specific heat capacity is constatnt and appoximating delta h or delta u across a phase change yields an inaccurate representation of the change in energy ?

Solution

The enthalpy is the preferred expression of system energy changes in many chemical, biological, and physical measurements at constant pressure, because it simplifies the description of energy transfer. At constant pressure, the enthalpy change equals the energy transferred from the environment through heating or work other than expansion work.