In a second-order reaction, if first-order is observed for both the reactants A and B, then which one of the following reactant mixtures will provide the highest initial rate?

Question

In a second-order reaction, if first-order is observed for both the reactants A and B, then which one of the following reactant mixtures will provide the highest initial rate? (A) 0.1 mol of A and 0.1 mol of in 0.2 litre solvent (B) 1.0 mol of A and 1.0 mol of in one litre solvent (C) 0.2 mol of A and 0.2 mol of in 0.1 litre solvent (D) 0.1 mol of A and 0.1 mol of in 0.1 litre solvent

Tardigrade Admin · Accepted Answer

Initial =[ A 0][ B 0] Assuming that the volume of solvent = volume of solution, Initial rate =k × 2 M × 2 M =4 k M 2

Q. In a second-order reaction, if first-order is observed for both the reactants $A$ and $B$ , then which one of the following reactant mixtures will provide the highest initial rate?

0.1 mol of A and 0.1 mol of in 0.2 litre solvent

1.0 mol of A and 1.0 mol of in one litre solvent

0.2 mol of A and 0.2 mol of in 0.1 litre solvent

0.1 mol of A and 0.1 mol of in 0.1 litre solvent

Initial $= [A_{0}] [B_{0}]$
Assuming that the volume of solvent $=$ volume of solution, Initial rate
$= k \times 2 M \times 2 M = 4 k M^{2}$

Q. In a second-order reaction, if first-order is observed for both the reactants A and B, then which one of the following reactant mixtures will provide the highest initial rate?