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So What is boyles law?Boyle's law was named after the chemist Robert Boyle. Boyle published this law in 1662. Robert Boyle demonstrated his findings by showing the volume of air being trapped by a liquid in the limb of a "J" shaped tube. The volume than decreased in exact proportion to the pressure produced by the liquid substance in the long part of the tube. The trapped air then exerted force against the compressing liquid. Boyle published his results in a pamphlet.
Boyle's law is the relationship between the pressure and volume of gas when temperature is at a constant. According to Boyle's law, an inverse relation exists between pressure and volume. Gases do not have a set shape or volume. Gases will change their volume depending on the pressure forced upon them. Boyle's law explains that as the pressure increases, the volume decreases. For example, if the pressure is 8kpa and the volume is 4mL, when the volume is halved (2mL) the pressure is doubled (16Kpa). When the volume is doubled (8mL) the pressure is halved (4Kpa). Gasses are made up of lossley moving particles. When a gas is in a closed container, the molecules are forced together and are constantly hitting and bouncing off the walls of the container and exert pressure. For example when air is forced into a balloon the molecules hit and bounce off the walls of the balloon keeping it inflated. Boyle's law reads: P1V1=P2V2 P1= the original pressure V1= the original volume P2= the new pressure V2= the new volume This law was used later to determine the volume or pressure of a gas using the formula above. For example, A sample of gas has a volume of 239mL at a pressure of 1.38atm. What is the volume of the gas at 9.39atm? V1=239mL P1=1.38atm P2= 9.39atm V2=? BY following the formula P1V1=P2V2 transformed to V2= P1V1/P2 should give the value of V2 to be 35.1mL. Boyle's law applies to every day life situation as well. Air Bags are an example of Boyle's law in every day life. Air bags inflate by using a chemical reaction changing the temperature, volume and pressure of the inside gas. First the conductor in the vehicle heats up. This then ignites a certain chemical inside the air bag creating high pressure. The high pressure causes the airbag to inflate. |