CHEM101 Study Guide - Horse Length, Dave Coverly, Ideal Gas Law

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

Document Summary

Molecules are negligibly small compared with the space they occupy. At 25 c, vm = ~25 l for a gas, 25 ml for a liquid. All the volume in a gas is empty space. V + = pa + pb + . Pa, pb, , are the partial pressures of a, b, . Molecules are far apart no interaction. It does not matter whether the gas is ar or co2. The ideal gas law can be applied to a mixture of gases. Note that mole fractions add up to 1. The pressure exerted by a mixture of gases equals the sum of the partial pressures of the individual gases. The partial pressure of a gas in a mixture equals the total pressure of the mixture multiplied by its mole fraction. The following were pumped into a 5. 00 l tank at 25 c: 46 l of o2 (g) at 1. 00 atm. 12 l of he (g) at 2. 00 atm.