Boyle’s Law Pressure and Volume.

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Presentation transcript:

Boyle’s Law Pressure and Volume

760 mm Hg = 760 torr = 1 atm = 101.3 kPa = 14.7 psi Pressure Pressure = Force / Area SI unit = Pa = 1N/m2 kPa= 1000 Pa Pressure of a gas is determined by the kinetic motions of its molecules (each collision exerts a force on the container) po 760 mm Hg = 760 torr = 1 atm = 101.3 kPa = 14.7 psi STP: O°C and 1 atm (101.3 kPa) SATP: 25°C and 100 kPa

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Pressure & Volume Atoms inside constantly colliding inside walls = exerting pressure As atmospheric pressure decreases, there are fewer air molecules to collide with on the outside So as pressure decreases outside, the inside expands

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Plot the Following Data Volume (L) Pressure (kPa) 1/P 0.500 818 0.00122 1.00 411 0.00243 1.50 273 0.00366 2.00 205 0.00488 2.50 164 0.00610 3.00 137 0.00728 3.50 117 0.00850 4.00 101 0.00990