CHM110H5 Lecture Notes - Lecture 16: Perfect Gas, Compressibility Factor, Ideal Gas
Document Summary
The van der waals constants a and b are different for different gasses. They generally increase with an increase in mass of the molecule and with an increase in the complexity of the gas molecule (i. e. volume and number of atoms) molecules a (l2atm mol-2) b (cm3mol-1) The value of the van der waal"s constant is a measure of the deviation from ideal behavoiur. If a gas behaves ideally, z = 1. The extent to which z deviates from 1 is a measure of how non-ideal the behaviour is. For every gas there is a temperature, the boyle temperature at which that gas behaves ideally. One of the very important equations to remember. That is, if a certain amount of gas at a particular condition of p, v and t are given we can find the new set if any one of them (p, v or t) changes.
