feb2808 - Equilibrium is a state in which there are no...

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Equilibrium is a state in which there are no observable changes as time goes by. Chemical equilibrium is achieved when: the rates of the forward and reverse reactions are equal and the concentrations of the reactants and products remain constant Physical equilibrium H 2 O ( l ) Chemical equilibrium N 2 O 4 ( g ) 8.1 H 2 O ( g ) 2NO 2 ( g )
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N 2 O 4 ( g ) 2NO 2 ( g ) Start with NO 2 Start with N 2 O 4 Start with NO 2 2 O 4 equilibrium equilibrium equilibrium 8.2
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8.3 constant Actually table 15.1 page 498
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N 2 O 4 ( g ) 2NO 2 ( g ) = 4.63 x 10 -3 K = [NO 2 ] 2 [N 2 O 4 ] a A + b B c C + d D K = [C] c [D] d [A] a [B] b K >> 1 K << 1 Lie to the right Favor products Lie to the left Favor reactants Equilibrium Will 8.4
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Homogenous equilibrium applies to reactions in which all reacting species are in the same phase. N 2 O 4 ( g ) 2NO 2 ( g ) K c = [NO 2 ] 2 [N 2 O 4 ] K p = NO 2 P 2 N 2 O 4 P In most cases K c K p a A (g) + b B (g) c C (g) + d D (g) 8.5 K p = K c (RT) n n = moles of gaseous products – moles of gaseous reactants = ( c + d) – ( a + b )
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This note was uploaded on 05/30/2008 for the course CHEM 116 taught by Professor Lalancette during the Spring '08 term at Rutgers.

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feb2808 - Equilibrium is a state in which there are no...

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