CHEM101 Lecture Notes - Molar Mass, Effusion

• School: University of Alberta
• Department: Chemistry
• Course: CHEM101
• Professor: Yoram Apelblat

Document Summary

Effect of mass and temperature: urms= 3rt/m, temperature, relates to the speed directly, but for a given gas, the molar mass is constant so as we increase temperature, we get an increased urms (speed, u directly related to t, mass, constant temperature, molar mass will change (2 different gases) and there is an inverse relationship, the lighter gas will result in a greater speed, m inversely proportional to u, calculation example, calculate the ratio of speeds for hydrogen vs. oxygen speeds urms for h2/ urms for o2 ( 3rt/m)/( 3rt/m) = (1/mh2)/(1/mo2) = mh2/mo2 =