Reaction A+B→C+D follows the following rate law: rate=k×[A]21[B]21 . Starting with initial concentration of one mole of A and B each, what is the time taken for the amount of A to become 0.25 mole. Given k=2.31×10−3 sec−1 .
(A) 300 sec.
(B) 600 sec.
(C) 900 sec.
(D) none of these