The degree of dissociation of SO 3 is α at equilibrium pres…

Chemistry Chemical Equilibrium Law of Equilibrium and Equilibrium Constant Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

The degree of dissociation of SO 3 is α at equilibrium pressure P 0 . K p for 2SO 3 (g) 2SO 2 (g) + O 2 (g) is:

[(P 0 α 3 )/2(1 – α ) 3 ]

[(P 0 α 3 )/(2+ α )(1 – α ) 2 ]

[(P 0 α 2 )/2(1 – α ) 2 ]

None of these

Text Solution

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The correct answer is:

2SO 3 (g) 2SO 2 (g) + O 2 (g)

t=0 a 0 0

t=t eq. a(1– α ) a α a

Total mole at eq. = a

= P 0 = × P 0 ; = P 0 = × P 0

PO 2 = P 0

K P = =

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