For a reaction A → Product, rate constant is 6.93 × 1 0 − 3 hour − 1 . What is order of reaction?

The unit of the rate constant k for an n -th order reaction is given by ( mol L − 1 ) 1 − n time − 1 . Given the rate constant k = 6.93 × 1 0 − 3 hour − 1 , the unit is time − 1 . Equating the units, we get ( mol L − 1 ) 1 − n = 1 , which implies 1 − n = 0 ⇒ n = 1 . Thus, the reaction is a first-order reaction. Answer: 1

Chemistry - Chemical Kinetics Question with Solution | TestHub

ChemistryChemical KineticsRate of Reactions/Rate LawEasy2 minPYQ_2025

ChemistryEasysingle choice

For a reaction $A \to$ Product, rate constant is $6.93 \times 1 0^{- 3}$ hour $^{- 1}$ . What is order of reaction?

Options:

Answer:

Solution:

The unit of the rate constant $k$ for an $n$ -th order reaction is given by $(mol L^{- 1})^{1 - n} time^{- 1}$ .

Given the rate constant $k = 6.93 \times 1 0^{- 3} hour^{- 1}$ , the unit is $time^{- 1}$ .

Equating the units, we get $(mol L^{- 1})^{1 - n} = 1$ , which implies $1 - n = 0 \Rightarrow n = 1$ .

Thus, the reaction is a first-order reaction.

Answer: 1

Stream:MHT_CETSubject:ChemistryTopic:Chemical KineticsSubtopic:Rate of Reactions/Rate Law

⏱ 2mℹ️ Source: PYQ_2025

Doubts & Discussion

Loading discussions...