Mechanism of a hypothetical reaction X2 + Y2 2XY is given below :
(ii) X + Y2 XY + Y (slow)
(iii) X + Y XY (fast)
The overall order of the reaction will be :
1
2
0
1.5
As learnt
Rate of Law = Dependence of Rate on Concentration -
The representation of rate of a reaction in terms of concentration of the reactants is known as Rate Law
or
The Rate Law is the expression in which reaction rate is given in terms of molar concentration of reactants with each term raised to some power, which may/maynot be equal to stoichiometric of the reacting species in a balanced chemical equation
- wherein
Formula:
K= rate constant
The given reaction
X+
Slow step in the reaction is rate determining step
-----------------------(1)
Equilibrium constant for fast step
Substituting [X] in the first step will give
Rate =
=
Order of reaction = 1+
Option 1)
1
This option is incorrect
Option 2)
2
This option is incorrect
Option 3)
0
This option is incorrect
Option 4)
1.5
This option is correct