chem 105a notes

chem 105a notes - increases with the size of the molecule...

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Ideal gas particles: 1. Are volumeless 2. Strike each other with elastic collisions 3. Have no attraction to one another Real gases approach pv=nrt behavior under LOW pressure and HIGH temperature Low P: the particles volume is less significant High T: high KE reduces attractions, makes collisions more elastic This is where vaaderwaals equation comes in; modification of ideal gas law that fits more real gas behavior P + a (n/V)2 x (V – nb) = nRT Accounts for interactions among gas particles Gases with weak intermolecular forces have low values of a P corrected for intermolecular forces V corrected for gas volume; subtracts the volume of gas molecules themselves; generally
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Unformatted text preview: increases with the size of the molecule Exam covers 4 and 5 EXCEPT gas forming reactions and 5.11 Energy: capacity to do work Work: force acting over a distance Potential energy: energy stored due to position or composition Kinetic energy: energy due to motion of an object When delta E is negative; thats from systems perspective Lose energy = negative Gain energy = positive J = the energy needed to move 1 kg mass 1 m Calorie: energy needed to raise 1 g of water 1 C The total energy of the universe is constant or energy is neither created nor destroyed Energy can be transferred between objects; from one form to another...
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