Chemistry class 21

Solution-.
A  +  B→ 3C
1       2      4

[A] =1/3
[B] = 2/3
[C] =4/3
Qc = [C]3 / [A]×[B]
      = 43×3×3/33×1×2
       =10.66
Thus, Q must decrease to attain value of Kand therefore, [C] must decrease or [A] or [B] must increase, i.e., backward direction.
option B is correct.

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