CHEM 110 Lecture Notes - Lecture 1: Thermodynamics, Exothermic Process, Enthalpy

• School: McGill University
• Department: Chemistry
• Course: CHEM 110
• Professor: Christopher Barrett

Document Summary

Viewed at a microscopic level many things contribute to the total energy content of a system. The sum of all energy contributions is called the internal energy (u) of the system. He relationship between heat (q), work (w) and the internal energy (u) of a system is dictated by the conservation of energy. The internal energy of an isolated system is constant. In thermodynamics our focus is on the system. Heat (q) is positive when it flows into the system and negative when it flows out of the system. Work (w) is positive when it is done on the system by the surroundings and negative when it is done by the system on the surroundings. Any property that has a unique value for a specified state (i. e. p,t,v,n) of a system is said to be a. State function: water at 293k and 1. 00atm is in a specified state, d - 0. 99820 g/ml o o.