Question -
For reaction: A + B → Products, the rate if the reaction at various concentration are given below: Expt.No.(A)(B)Rate10.20.2220.20.4430.60.436
Options:
A .  Rate =k[A]2[B]2
B .  Rate =k[A]2[B]
C .  Rate =k[A][B]2
D .  Rate =k[A]3[B]
Answer: Option B : B Let the rate law be r=k[A]x[B]y Divide (2) by (1) ∴2=[2]y,y=1 Divide (3) by (2) ∴9=(3)x,x=2 Hence rate equation, R=k[A]2[B]1
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