The rate constant is numerically the same for three reactions of first, second and third order respectively. Which of the following is correct?

Question

The rate constant is numerically the same for three reactions of first, second and third order respectively. Which of the following is correct? (A) If [ A ]=1 then r 1= r 2= r 3 (B) If [ A ]<1 then r 1> r 2> r 3 (C) If [ A ]>1 then r 3> r 2> r 1 (D) All of these

Tardigrade Admin · Accepted Answer

Consider a reaction; A arrow Product ∴ r1=k[A]1 for I order...(i) ∴ r 2= k [ A ]2 for II order...(ii) ∴ r 3= k [ A ]3 for III order ...(iii) ∵ k is same in all If [ A ]=1, r 1= r 2= r 3 If [ A ]<1, r 1> r 2> r 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 of the following is correct?

If $[A] = 1$ then $r_{1} = r_{2} = r_{3}$

If $[A] < 1$ then $r_{1} > r_{2} > r_{3}$

If $[A] > 1$ then $r_{3} > r_{2} > r_{1}$

All of these

Q. The rate constant is numerically the same for three reactions of first, second and third order respectively. Which of the following is correct?

If [A]=1 then r1​=r2​=r3​

If [A]<1 then r1​>r2​>r3​

If [A]>1 then r3​>r2​>r1​

All of these

Consider a reaction; A→ Product ∴r1​=k[A]1 for I order...(i) ∴r2​=k[A]2 for II order...(ii) ∴r3​=k[A]3 for III order ...(iii) ∵k is same in all If [A]=1,r1​=r2​=r3​ If [A]<1,r1​>r2​>r3​ If [A]>1,r3​>r2​>r1​

If $[A] = 1$ then $r_{1} = r_{2} = r_{3}$

If $[A] < 1$ then $r_{1} > r_{2} > r_{3}$

If $[A] > 1$ then $r_{3} > r_{2} > r_{1}$