29/10/2009

For the dissociation reaction N₂O₄(g)â†’2NO₂, Find the degree of dissociation(@) in terms of K_p and total equilibrium pressure P.

1 Answers

these are standard questions. s, u need 2 practic dem well.

here, degree of dissociation is @.

N₂O₄(g) â†’ 2NO₂
0 0 initial moles

1 - @ @ at equilibrium

total moles = 1 + @.

p_NO₂ = [ 2@ / ( 1+@) ]P , p_N₂O₄ = (1-@ / 1+@) P

where p_A represents partial pressure of A. and P represents total pressure.

K_p = [ [ 2@ / ( 1+@) ]P ]² / [(1-@ / 1+@) P]

K_p = [4@² / ( 1 - @²)] P

K_p = @² ( 4P + K_p )

@ = \sqrt{K / (4P+K)}

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