12.1 Experimental gas laws 0.0 / 5HideShow resource informationPhysicsFluidsA2/A-levelAQACreated by: Isabel CookeCreated on: 08-02-14 17:17 Pressure = force per unit area that a gas exerts on a surface. Measured in Pascals. I Pa = 1 Nm-2 Dependent on the temperature, volume of gas container and mass of gas. 1 of 4 Boyle's law The gas pressure x it's volume is constant providing the mass and temperature remains the same. A change at constant temperature = isothermal change. If you plot a graph of pressure against 1/volume, you get a straight line as pV= constant equals p = constant x 1/V. pV = constant 2 of 4 Charles' Law Plotting the measurements of the volume of a gas at 0 and 100 degrees Celsius, shows absolute zero is -273.15 degrees whatever volume used. This graph is a straight line passing through the axis at (absolute) zero, therefore: V/T = constant 3 of 4 The pressure law The pressure of a fixed mass and volume of gas is measured when temperature is increased. The measurements are plotted an they give a straight line through the origin therefore: P/T = constant 4 of 4
Comments
No comments have yet been made