Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main2006ChemistryChemical KineticsActual

The following mechanism has been proposed for the reaction of NO with Br ₂ to form NOBr : NO ( g )+ Br ₂( ~g ) NOBr ₂( ~g ) NOBr ₂( ~g )+ NO ( g ) 2 NOBr ( g ) If the second step is the rate determining step, the order of the reaction with respect to N O(g) is

Options

  1. A1
  2. B0
  3. C3
  4. D2

Correct answer

D. 2

Step-by-step solution

NO ( g )+ Br ₂( ~g ) NOBr ₂( ~g ) NOBr ₂( ~g )+ NO ( g ) 2 NOBr ( g ) aligned R & = K [ NOBr ₂ ][ NO ] & = K K _ c [ NO ] [ Br ₂ ][ NO ], where K _ c = [ NOBr ₂ ] [ NO ₂ ] [ Br ₂ ] & = K ^ [ NO ]^2 [ Br ₂ ] aligned

Practice Chemical Kinetics on Quantrex Academy →

More from Chemical Kinetics

For a reversible reaction R P , at constant temperature, both the forward and the backward reactions are first order elementary reactions with rate constants k_f and k_b , respecti 2026For a first-order reaction R P at a given temperature, k is the rate constant. For this reaction, at the given temperature, the concentrations of R and P at a time t are [ R ] and 2026Given below are two statements: R=8.314 J K ⁻¹ mol ⁻¹ and 1 cal =4.2 J Statement I: When E_a=12.6 kcal/mol, the room temperature rate constant is doubled by a 10 ,^ C increase in t 2026Decomposition of a hydrocarbon follows the equation k = (5.5 10¹¹ , s ⁻¹) ,e^ -28000 , K T . The activation energy of reaction is __________ kJ mol ⁻¹ . (Nearest Integer) Given : R 2026For a reaction A P at T K , the half life (t_ 1/2 ) is plotted as a function of initial concentration [A]₀ of A as given below. The value of x in the given figure is _______ s (Nea 2026First order gas phase reaction A B + C p_i = initial pressure of gas A, p_t = total pressure of the reaction mixture at time t Expression of rate constant ( k ) is 2026If the half life of a first order reaction is 6.93 minutes then the time required for completion of 99 % of the reaction will be _____ minutes. (Given : 2 = 0.3010 ) 2026Consider the given graph showing variation of reactant concentration with time. Three different reactions were started with identical initial concentration of reactants. Which of t 2026 Full Chemical Kinetics list All JEE Main PYQs