Chemistry 2374A Lecture Notes - Lecture 17: Thermal Reservoir, Heat Capacity, Exact Differential
28 Dec 2017
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Chapter 2. 6 & 2. 7 (different kinds on work & heat capacities and enthalpy) The total dw is the sum of all kinds of work, and it is an exact differential, thus we can also write. Other work terms can be added (if needed). For example: when the system is irradiated with light. The variables involved in each of the work terms are (cid:498)conjugate pairs(cid:499), consisting of du = dq pextdv + dwadditional one intensive and one extensive variable. The product of each of these pairs has units of energy (j) Another way of writing the 1st law is atkins eq. For most of the pv processes discussed so far we assumed that the system is surrounded by a heat bath (thermostat), and we focused on the dw part of the 1st law. Now is the time to have a closer look at the heat dq.
