IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

jain108

is there any difference between law of mass action and rate law?

.

if yes, explain please...........

dev_22oct

yes there is difference b/w them..

according to law of mass equation the rate of a equation is directly proportional to effective conc of the reacting species, each raised to the power which is equal to the correcponding stoichimetric no of the substance appearing in the chemical equation.

v₁a₁ + v₂a₂-----> v₃a₃+v₄a₄

r

[a₁]^v₁[a₂]^v₂

how ever at times the obove relation doesnot hold correct in which exponents are not equal to stoichimetric coefficents..

so it becomes

r

[a₁]^a[a₂]^b

dev_22oct

v₁ + v₂ = molecularity of a reaction

a + b = order of a reaction.

jain108

thanks
thanks a lot

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