Scan_Doc0098 - 190 Chapter Five Gases The ideal gas law...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
190 Chapter Five Gases The ideal gas law applies best at pres- sures smaller than 1 atm. The ideal gas law is an equation of state for a gas, where the state of the gas is its condition at a given time. A particular state of a gas is described by its pressure, volume, temperature, and number of moles. Knowledge of any three of these properties is enough to completely define the state of a gas, since the fourth property can then be determined from the equation for the ideal gas law. It is important to recognize that the ideal gas law is an empirical equation-it is based on experimental measurements of the properties of gases. A gas that obeys this equation is said to behave ideally. The ideal gas equation is best regarded as a limiting law-it ex- presses behavior that real gases approach at low pressures and high temperatures. There- fore, an ideal gas is a hypothetical substance. However, most gases obey the ideal gas equation closely enough at pressures below 1 atm that only minimal errors
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/13/2010 for the course CHEM 2301 taught by Professor Bill during the Spring '10 term at South Texas College.

Ask a homework question - tutors are online