Chemistry 2374A Lecture Notes - Lecture 10: Chemical Energy, Dirham, Joule

• School: Western University
• Department: Chemistry
• Course: Chemistry 2374A
• Professor: Lars Konermann

Document Summary

Chapter 2. 1 & 2. 2 (conservation of energy & state functions, exact and inexact differentials) Certain quantities, called state functions, depends only on the current state of the system. For a state function x, delta x is independent of the path used to get from xinitial to xfinal. In other words: delta x = xinitial to xfinal is independent of the path taken (only true if x is a state function) In this case dx is called an exact differential. Important point: delta sign (looks like triangle) is only used for state function, without. Delta sign, the function is not a state function; (cid:498)d(cid:499) is used for exact differential. The internal energy for 1 mol of an ideal gas is completely defined by reporting t (or p and v). Important point: for calculations, it is important to know if a certain parameter is a state function or not. Important point: whenever there is a initial point = final point.