Blake Lecture 10-22-08

Blake Lecture 10-22-08 - Paramagnetic : Has an unpaired...

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Blake 10-22-08 Chemistry Definitions: Na (s) [element in most stable state] = Na + (aq) + e - ( Enthalpy of Formation ) Na (g) = Na + (g) + e - (g) Hund’s Rule of Maximum Multiplicity - when multiple orbitals at same E, 1e - in each prior to pairing Pauli Exclusion Principal : Every electron has a unique set of four quantum numbers Aufbau : Building up = put electrons in the lowest energy orbitals first System : what you want to study (heat lost and gained) Surroundings : the rest of the universe State Functions : describes the state of a system as it is , therefore it doesn’t depend on a “path” [MASS OF AN OBJECT, TEMP OF SYSTEM] Other Functions : Properties of a Process [Q, W]
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Unformatted text preview: Paramagnetic : Has an unpaired electron; attracted to a magnetic force Diamagnetic : When all electrons are paired; slight repulsion to magnetic fields Inverse Proportion : k = xy m, delta T c = wavelength * velocity Direct Proportion : Frequency and Energy; E = hv q = mc(delta T) Light can be used to break bonds N = 5 Br 2 (l) = 2Br(g) Delta H f Br(g) = 111.8 kJ Delta H rxn = 223.6 kJ Single Molecule: 223.6 kJ . 6.022 x 10 23 = 3.7 x 10-22 kJ / Br 2 Molecule You need a photon carrying 3.7 x 10-19 J S l = 0 circular P l = 1 dumbbell D l = 2 Criss-cross dumbbells V [Ar] 4s 2 3d 3 = [Ar] 3d 5...
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Blake Lecture 10-22-08 - Paramagnetic : Has an unpaired...

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