01:160:161 Chapter Notes - Chapter 10.10-10.11: Intermolecular Force, Ideal Gas
20 Dec 2018
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In reactions involving gaseous reactant or products, we often specify the quantity of a has in terms of its volume at a given temperature and pressure. Under standard temperature and pressure, 1 mol of an ideal gas occupies 22. 4 l. If a reaction occurs at or near standard temperature and pressure (stp), we can use 1 mol= 22. 4 l. Gases behave ideally when both of the following are true: (a) the volume of the gas particles is small compared to the space between them (b) the forces between the gas particles are not significant. At stp, these assumptions are valid for most common gases. However, these assumptions break down at higher pressures or lower temperatures. The finite volume of has particles- that is, their actual size- becomes important at high pressure because the volume of the particles themselves occupies a significant portion of the total gas volume.
