Question

For the Reaction, pA + qB -----> Product, the rate law expression is r = K [A]^1 [B]^m, then :-

(a) (p + 1) < (1 + m)
(b) (p + q) > (1 + m)
(c) (p + q) may or may not be equal to (1 + m)
(d) (p + q) = (1 + m)

Answer 1

(p + q) may or may not be equal to (1 + m)


option c is correct

Answer 2

(p + q) may or may not be equal to (1 + m)

Explanation:

Order of the reaction is defined as the sum of the concentration of terms on which the rate of the reaction actually depends. It is the sum of the exponents of the molar concentration in the rate law expression.

For reaction: $pA+qB\rightarrow Product$

$r=k[A]^1[B]^m$

Elementary reactions are defined as the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical reaction.

For complex reactions order is experimentally determined and may or may not be equal to stoichiometric coefficients as represented in the balanced chemical reaction.

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