CHEM 204 Lecture Notes - Lecture 3: Collision Frequency, Viscosity, Partial Pressure

• School: McGill University
• Department: Chemistry
• Course: CHEM 204
• Professor: Christopher Barrett

Document Summary

Ke is transferred perfectly from one molecule to another without being transferred to other types of energy: there is no interaction, attractive or repulsive forces between molecules. 3. 3 kinetic energy and temperature: we know. 3. 4 the maxwell distribution laws: the rms velocity gives us a good way of knowing the average velocity, but its impossible. 2: at small values of c (speed), f(c) is higher, meaning that. 3. 5 molecular collisions and mean free path: how often do molecules collide (z) with one another, consider the motion of a molecule and assume all other molecules are still. Distance between the molecule and the one it will collide with is d. In time t this molecule moves a distance of ct. =(cid:1853)(cid:1874)(cid:1857)(cid:1870)(cid:1853)(cid:1857) (cid:1871)(cid:1868)(cid:1857)(cid:1857)(cid:1856) (cid:1872)(cid:1865)(cid:1857) (cid:1854)(cid:1857)(cid:1872)(cid:1875)(cid:1857)(cid:1857)(cid:1866) (cid:1855)(cid:1867)(cid:1864)(cid:1864)(cid:1871)(cid:1867)(cid:1866)(cid:1871) frequency, =(cid:1855)(cid:1852)(cid:2869)= (cid:1855) (cid:883) And the mean free path can be written as: = (cid:884)(cid:1856)(cid:2870) is only dependent (inversely proportional) to density: note that t a(cid:374)d p (cid:272)a(cid:374)(cid:272)el out ea(cid:272)h other(cid:859)s effect.