The+Gas+Laws

__**//Boyle's Law//**:__ Pressure and volume are inversely related. The higher the pressure, the lower the volume Boyle used trapped gas in a J shaped tube and added mercury to increase the pressure which decreased the volume of the gas. PV= constant The constant depends on the temperature and the amount of gas in the sample. [|http://www.sparknotes.com/chemistry/gases/ideal/section1.html]

__**//Charles' Law//**:__ The volume of a fixed amount of gas maintained at a constant pressure is directly proportional to its absolute temperature Hot air balloons rise because as temperature increases the air expands. Warm air in the balloon is less dense than the air around it so it rises. The law was was discovered in 1787 At 0 Kelvin gas is predicted to have a 0 volume ex. When liquid nitrogen is poured on a balloon, the temperature of the gas in the balloon decreases and as well as the volume. http://www.sparknotes.com/chemistry/gases/ideal/section1.html

__**//Avogadro's Law//**:__ The volume of a gas maintained at a constant temperature and pressure is directly proportional to the numer of moles of the gas. V= constant x n(# of mols) Doubling the number of moles of gas will cause the volume to double if temperature and pressure remain constant http://mcatpearls.com/master_craig/node190.html

__**//Gay-Lussac and the Law of Combining Gases//**:__ Gay-Lussac's Law says that for a fixed amount of gas (fixed number of moles) at a fixed volume, the pressure is proportional to the temperature At a given pressure and temperature, the volumes of gases that react with one another are in the ratios of small whole numbers. ex. 2H2 + O2 ---> 2H2O http://www.chemistryexplained.com/

By: Ellen Varner, Anne Smolko Source: Chemistry The Central Science http://www.chem.csus.edu/gaslaws/gay-lus.html