CHEM 1040 Lecture Notes - Lecture 9: Thermodynamics, Electrochemistry, Spectroscopy
11 Oct 2018
School
Department
Course
Professor
Document Summary
Thermochemistry is: (cid:120) a subset of thermodynamics. (cid:120) the study of the heat given off or absorbed in a chemical reaction. surroundings. Chemical reactions involve a transfer of energy between the _____________ and. System the part of the universe under observation e. g. , engine, electrical cell, reaction in a flask, etc. Therefore, the universe is made up of the system and the surroundings. The state of a system is characterised by a set of variables, e. g. , p, v, t, n, etc. These are state variables also known as state functions. P, v, t, n and mass can be classified as either: Dependent of size. e. g. : we can transfer energy in and out of a system, where the. ________________________ of the system may change. internal energy: internal energy (u) is the sum of the kinetic and potential energy of system. Note: in these notes, u will be used to represent the internal energy (as is used in ebbing & gammon).
