CHE 2A Study Guide - Novella, Van Der Waals Equation, Ideal Gas

• School: UC-Davis
• Department: Chemistry
• Course: CHE 2A
• Professor: A N D R E A S T O U P A D A K I S

Document Summary

V available= v container- nb(b=constant related to size of molecules) P actual= p ideal- a (n/v)^2 a= constant related to how strong attraction of gas molecules nrt=(p ideal- a (n/v)^2) (v container- nb) Van der waals constant is different for each gas a and b increase with mass increase and increase of complexity of structure. A gas is ideal when concentration is very low and dilute. A non ideal gas is in high concentration. Mean square speed is not the same as square mean speed. Not all molecules in a gas travel at same speed. As temperature increases so does the distribution of speed. Hydrogen (1g) o must be heated at very high temperature in order to match that of hydrogen. H2 molecules speed at 25 c so urms of h2 sqrt(3 x 8. 3145 x 298 k)/sqrt (2. 016 x 10^- 3) 1. 92 x 10^3 m/s speed of h2 molecules is faster than a high powered rifle bullet.