Q.47. The rate law for the reaction A+B→C at 25∘C is given by rate =k[A][B]2. Calculate the rate of reaction if rate constant at same temperature is 6.25 mol−2 dm6 s−1[[ A]=1M,[B]=0.2M]
A. 0.25 mol dm−3 s−1
B. 0.5 mol dm−3 s−1
C. 0.75 mol dm−3 s−1
D. 1.25 mol dm−3 s−1
Answer :- A
Explanation :-
Rate =k[A][B]2
= 6.25 mol−2 dm6 s−1×1 mol dm−3×0.2 mol dm−3×0.2 mol dm−3
= 0.25 mol dm−3 s−1