CHEM 107 Lecture Notes - Lecture 5: International System Of Units, Ideal Gas, Torr

• School: Texas A&M University
• Department: Chemistry
• Course: CHEM 107
• Professor: Hughbanks Timothy

Document Summary

Properies of gases: a gas has no deinite volume or deinite shape but ills the container in which it is in, gases have very low densiies, gas densiies vary with condiions, gases change volume dramaically with changing temperature. V is volume n is moles of gas. T is temperature: originally based on empirical observaions, can be derived mathemaically from the kineic theory of gases. The gas constant r: a proporionality constant. Found out by experiment: in si units. 62. 36 l torr mol-1 k-1: use any convenient units for p and v, must use kelvin and not celsius. Pressure: pressure arises from a huge number of collisions of molecules with walls that contain it, pressure = force/area, unit= pascal.