The ideal gas law is truly a wonderful equation. Through Boyle's, Charles', and Gay-Lussac's Law, we have been able to develop an equation that describes how all three of these laws relate to one another when we take moles of gas into consideration. In this lab, you will be examining the ideal gas law and using it to calculate the number of moles of gas in an unknown liquid.
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We can describe how a gas will change based on the volume, pressure, temperature, and moles of the gas. The gas laws focus on these properties and how changing one affects the other three.
Gay Lussac's Law: Gas molecules move quicker the more we heat them up and increase the temperature. This means that they will be hitting the sides of the container more often and the pressure will also increase as the temperature increases. If we keep volume constant, then pressure and temperature are directly related. Gay-Lussac’s Law relates pressure and temperature through a math expression: Where P represents pressure and T represents temperature. i and f simply mean before and after the reaction.
Boyle's Law: If we keep temperature constant, then volume and pressure are inversely related. As one goes up the other goes down If the container gets larger the gas molecules are hitting the walls at a less frequent rate. Therefore, by increasing the volume of a container, we are decreasing the pressure that is felt by that container. The reverse is true if we decrease the volume of a container. Boyle’s Law states that pressure and volume are inversely proportional and they can be described by the equation: Charles Law:
Boyle’s Law looked at the relationship between volume and pressure. Gay-Lussac’s Law looked at the relationship between pressure and temperature Charles Law focuses on the relationship between temperature and volume. As you heat up gas molecules they move quicker and this causes them to hit the sides of the container with greater frequency. If the container is capable of expanding, so that pressure can remain constant, then the volume will increase as the temperature increases. Charles Law can be described by the equation: |
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