Chemical Kineti...

Direction (Q. Nos. 1-14) This section contains 14 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

A chemical reaction proceeds through the following steps :

Step I, 2A ⇌ X  fast
Step II, X+B ⇌ Y slow
Step III, Y+B ⇌ Product fast

Q. The rate law for the overall reaction is

The following reaction obey rate law 

It can follow mechanism

I. NO₂ + O₃  NO₃ + O₂ ,   

NO₃+NO₂  N₂O₅

II.  NO₂ + O  NO₃

NO₃+NO₂  N₂O₅

Select the correct mechanism.

A chemical reaction is said to take place through the various stages with ΔG° values indicated by the graph:

Stages I and II represent respectively

Following reaction takes place by mechanism:

Step I

Step II

Hence  for the given reaction is 

For the reaction, 

Steps are 

For the reaction,

A + 2B → C+ D

The rate law is k [A] [B] .
Select the correct statement.

For the reaction, 

Mechanism is given by

Rate law is true, if 

For the following S_N reaction, 

Rate-determining step is

Reaction between nitric oxide and hydrogen takes place by the following mechanism:

Q.

Rate of the overall reaction in terms of the concentration of the reactants is 

Consider the following reaction,

The rate equation for this reaction is, rate = k[CI₂] [H₂S]
Which of these mechanisms is/are consistent with this rate equation?

[AIEEE2010]

The following mechanism has been proposed for the reaction,

It involves the following steps:

Q.

The order of the reaction w.r.t. NO(g) is

Consider the three following proposed mechanism for the overall equation.

Q.

Which mechanism predicts a third order reaction? 

Consider the following proposed mechanism :

Based on the following steps:

Rate law is