SELECT * FROM question_mgmt as q WHERE id=2820 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=48 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

What is Kc for the following equilibrium when the equilibrium concentration of each substance is: [SO2]= 0.60 M,  [O2] = 0.82 M  and  [SO3] = 1.90 M ?

2SO2(g) + O2(g)   ↔   2SO3(g)

Answer:

The equilibrium constant (Kc) for the give reaction is:

Kc   =   [SO3]2  /  [SO2]2 [O2]

      =  (1.90)2 M2  / (0.60)2 (0.8321) M3

      = 12.239 M-1 Approx.

Hence, Kc for the equilibrium is 12.239 M-1

 


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