CHM135H1 Lecture Notes - Lecture 8: Ideal Gas Law, Gas Constant, Intermolecular Force
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CHM135H1 Full Course Notes
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Chm135h1 f - lecture 8 - chapter 10 (1) Solids have highest intermolecular forces, and gases have lowest intermolecular forces. Ideal gas law assumes that there is no intermolecular forces. Can be conceptualized as a force exerted by gas molecule against walls of container. Due to collisions of particles with walls of container. Exerts force per unit area that we perceive as gas pressure. P = force area m (kg) a ( m s 2 ) area (m 2 ) 1 pa is force of 10. 2 mg over 1 cm 2 with an acceleration equal to gravity (a = 9. 81 m s 2 ) In this apparatus, pressure of atmosphere pushing down can support a column of liquid mercury. What we experience as pressure is the weight of all the air above us that is experiencing gravity. Seabed-dwelling creatures experience pressure as weight of all water directly above them. 760 mm hg = 1 atm = 101325 pa.
