TestUstad

Rate of reaction when concentration of reactants are taken as unity is called_________________?

Correct answer: C. Specific rate constant

  • A. Arrhenius constant
  • B. Molecularity
  • C. Specific rate constant
  • D. Ideal rate constant

Explanation

The specific rate constant, or rate constant k, is the reaction rate when the molar concentrations of all reactants in the rate expression are each taken as unity. Students may choose molecularity because it is related to reaction particles, but molecularity describes an elementary step and is not the rate at unit concentration.

Written and checked by , M.Phil ChemistryLast updated
Report an error

The more specific you are, the faster it gets fixed. A source beats an opinion.

Prefer email? [email protected]

About Rate Constant

The rate constant, k, connects reaction rate with reactant concentrations in a rate law and has a value fixed for a particular reaction at a given temperature. Questions involve determining k from rate data, identifying its units for different reaction orders, and applying the Arrhenius equation to temperature changes.

Practise Reaction Kinetics

573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Start a free Reaction Kinetics testAll Reaction Kinetics MCQs

Discussion

Stuck on an option, or know a faster way to get there? Ask or explain it here.

No comments yet. Be the first to explain this one.

Exams that ask Chemistry questions like this

Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Lecturer Chemistry Test Chemistry80 MCQsSubject Specialist Chemistry Test Chemistry80 MCQsDUHS Chemistry45 MCQsETEA MDCAT Chemistry45 MCQsKMU Chemistry45 MCQsMDCAT Chemistry45 MCQsNUMS Chemistry40 MCQsECAT Chemistry30 MCQsETEA Engineering Admission Test Chemistry30 MCQsGIKI Chemistry30 MCQsNED Chemistry30 MCQsNET Chemistry30 MCQsPIEAS Chemistry30 MCQsBSN Entry Test Chemistry25 MCQs

More Rate Constant questions

Ostwald's dilution law applicable to:

Final equation for the representation of rate of reaction in term of concentration is called

The Arrhenius equation shows that the rate constant increases when

When a graph is plotted between 1/T on X-axis and log k on y-axis a straight line is obtained with a negative slope which has two end in__________________?

The specific rate constant of a first order reaction depends on the________________?

Which is the unit of (K) rate constant for zero order reaction ?