Question
Chemistry Question on Order of reaction
Arrange the following rate constant units in increasing order of their order of reaction:(A) sec-1
(B) mol L-1 sec-1
(C) mol-1 L sec-1
(D) mol-1 L2 sec-1
Choose the correct answer from the options given below:
A
(C) < (A) < (B) < (D)
B
(C) < (B) < (A) < (D)
C
(B) < (A) < (C) < (D)
D
(A) < (B) < (C) < (D)
Answer
(C) < (A) < (B) < (D)
Explanation
Solution
The rate constant’s unit depends on the reaction order. For example, a first-order reaction has units of sec⁻¹, while second- and higher-order reactions involve units of concentration (mol/L) raised to varying powers. Thus, ordering is (C) < (A) < (B) < (D).