The rate constant is numerically the same for three reactions of first, second, and third order respectively. Which one is true for rate of three reactions, if concentration of reactant is greater than 1 M :

Question

The rate constant is numerically the same for three reactions of first, second, and third order respectively. Which one is true for rate of three reactions, if concentration of reactant is greater than 1 M : (A) r1=r2=r3 (B) r1 >r2 >r3 (C) r1< r2< r3 (D) all of these.

Tardigrade Admin · Accepted Answer

r1=k[ A ]1 r2=k[ A ]2 ; r3=k[ A ]3 If [A]>1 ; r3>r2>r1

Q. The rate constant is numerically the same for three reactions of first, second, and third order respectively. Which one is true for rate of three reactions, if concentration of reactant is greater than $1 M$ :

$r_{1} = r_{2} = r_{3}$

$r_{1} > r_{2} > r_{3}$

$r_{1} < r_{2} < r_{3}$

all of these.

$r_{1} = k [A]^{1}$
$r_{2} = k [A]^{2}; r_{3} = k [A]^{3}$
If $[A] > 1; r_{3} > r_{2} > r_{1}$

Q. The rate constant is numerically the same for three reactions of first, second, and third order respectively. Which one is true for rate of three reactions, if concentration of reactant is greater than 1M :

r1​=r2​=r3​

r1​>r2​>r3​

r1​<r2​<r3​