Question

If the rate of the reaction is equal to the rate constant, the order of the reaction is
A. 2
B. 3
C. 0
D. 1

Answer 1

Correct Answer - C
Consider the simple reaction `ArarrB`
The differential rate law is
Rate `=k[A]^(x)`
where `x` is the order with respect to the reactant `A` as well as overall order of reaction.
If rate of a reaction is equal to the rate constant, then
`[A]^(x)=1`
or, `x=0`
Thus, it is a zero order reaction.