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In class notes for November 2, 2007

# In class notes for November 2, 2007 - General Chemistry...

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General Chemistry Lecture 102a In class notes due November 2, 2007 Ch 7 OWL due 11/9 @ 11:59pm No Alternate Day for Final o Thursday December 20 7-9pm Last lecture o Distillation and Equilibrium Law of Mass Action Today o Relationships between K’s o “K c Forwards/Backwards o N 2 O 4 2NO 2(g) K f = / PNO22 PNO24 o 2NO 2(g) N 2 O 4(g) K b = / PNO24 PNO22 o K f = 1Kb Multiple of Reaction o N 2 O 4 (g) 2NO 2 (g) o ½ N 2 O 4 (g) NO 2 (g) o K 1 = / PNO22 PNO24 o K 2 = /( ) / PNO2 PNO24 1 2 o K 2 = ( ) / K1 1 2 o For any multiple n, Equ (2) = n x Equ (1) o K 2 =K 1 n Adding reactions o N 2 O(g) + ½ O 2 (g) 2NO(g) o 2NO(g) + O 2 2NO 2 (g) o Add them together N 2 O (g) + 2NO(g) + 3/2 O 2 (g) 2NO(g) + 2NO 2 Omit red sections because they occur on both sides of the equation N 2 O(g) + 3/2 O 2 2NO 2 (g)

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General Chemistry Lecture 102a In class notes due November 2, 2007 = ( ) ( ) / K1 PNO 2 PO2 1 2PN2O = ( ) ( ) K2 PNO2 2 PNO 2PO2 = ( ) ( ) / K3 PNO 2 PO2 3 2PN2O K3 = K1 x K2 Multiply K’s Subtraction o CH 4 + H 2 O 3H 2 + CO o
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In class notes for November 2, 2007 - General Chemistry...

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