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admin Staff asked 1 month ago

Differentiate between the rate of reaction and the rate constant

1 Answers
admin Staff answered 1 month ago

Rate of reaction

Rate constant

It is defined as the change in concentration of the reactant or product with time, each divided by its stoichiometric coefficient.

(i)

It is defined as the rate of chemical reaction when the concentration of each reactant appearing in the rate equation is taken as unity.

It always has a unit of (conc)/time.

(ii)

Its units depends on the order of a reaction. For nth order reaction the units of rate constant
= (conc)1-n time-1

It depends on the initial concentration of the reactants.

(iii)

It is independent of the initial concentration of the reactants.

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