Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard
  1. Home
  2. Medical
  3. Need explanation for: - Chemical kinetics - NEET
# Medical

Mechanism of a hypothetical reaction X2 + Y2 \rightarrow 2XY is given below :

(i) X2 \rightarrow X + X (fast)

(ii) X + Y2 \leftrightharpoons XY + Y (slow)

(iii) X + Y \rightarrow XY (fast)

The overall order of the reaction will be :

  • Option 1)

    1

  • Option 2)

    2

  • Option 3)

    0

  • Option 4)

    1.5

 

Answers (1)
P prateek

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: aA+bB\rightarrow cC+dD

              Rate=\frac{dR}{dT}

              =\alpha [A]^{x}.[B]^{y}

             =k[A]^{x}.[B]^{y}

 K= rate constant

 

 The given reaction

X_{2\rightleftharpoons }X+X (Fast)

X+Y_{2}\rightarrow XY+Y (slow)

Slow step in the reaction is rate determining step

\therefore Rate =K[x]\: [y_{2}]-----------------------(1)

Equilibrium constant for fast step

K=\frac{[x]^{2}}{[X_2]}

\therefore [X]=\sqrt{K[X_2]}

Substituting [X] in the first step will give

Rate = K.\sqrt{K[X_2]}.[Y_2]

=K{}'.[X_2]^{1/2}.[Y_2]

\therefore Order of reaction = 1+\frac{1}{2}=3/2

 


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

Similar Questions

Latest Asked Questions

Most Viewed Questions

Preparation Products

Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 39999/-
Buy Now
Knockout NEET 2025

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 45000/-
Buy Now
Rank Booster NEET 2022

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Knockout NEET 2022 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Live Classes, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Knockout NEET 2023 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Live Classes, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Boost your Preparation for NEET 2021 with Personlized Coaching
Start Now
 
Exams
Articles
Questions