NCERT Class XI Chemistry Equilibrium Solutions

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Question : 10
Total: 73
At 450 K, Kp = 2.0 × 1010bar for the given reaction at equilibrium.
2SO2(g)+O2(g)2SO3(g)
What is Kc at this temperature?
Solution:  
Kp = Kc(RT)Δng or Kc =
Kp
(RT)Δng

Δng = 2 – (2 + 1) = –1, T = 450 K, R = 0.083 bar LK1mol1
Kc =
2.0×1010
(0.083×450)1
= 2.0 × 1010 × (0.083 × 450) = 7.47 × 1011M1
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