These are the options for the question :. For the reaction, A +2B AB2, the order w.r.t. reactant A is 2 and w.r.t. reactant B. What will be change in rate of reaction if the concentration of A is doubled and B is halved?
a. increases four times
b. decreases four times
c. increases two times
d. no change
The correct answer is -a. increases 4 times
Rate = [A]2 If [A] is doubled then Rate’ = [2A]2 = 4 [A]2 = 4 Rate
