Given the following steps in the mechanism for a chemical reaction (a) A + B ⟶ fast C (b) B + C ⟶ slow D + E (c) D + F ⟶ fast A + E Identify which species are-Intermediates.

In kinetics, the term 'complex reaction' simply refers to a reaction whose mechanism comprises more than one elementary step. Looking at the complex reaction in question much information can be deduced such as catalyst, intermediate and the rate laws that may be predicted from this kinetic mechanisms.In this mechanism specie "C"and species "D"are intermediates because both of them are formed for short time interval and is consumed in the very next step. You may not find the intermediate at the end of reaction in the vessel.

Given the following steps in the mechanism for a chemical reaction (a) A + B ⟶ fast C (b) B + C ⟶ slow D + E (c) D + F ⟶ fast A + E Identify which species are-Intermediates.

In kinetics, the term 'complex reaction' simply refers to a reaction whose mechanism comprises more than one elementary step. Looking at the complex reaction in question much information can be deduced such as catalyst, intermediate and the rate laws that may be predicted from this kinetic mechanisms.In this mechanism specie "C"and species "D"are intermediates because both of them are formed for short time interval and is consumed in the very next step. You may not find the intermediate at the end of reaction in the vessel.

Given the following steps in the mechanism for a chemical reaction (a) A + B ⟶ fast C (b) B + C ⟶ slow D + E (c) D + F ⟶ fast A + E Write the rate equation for the rate determining step.

In kinetics, the term 'complex reaction' simply refers to a reaction whose mechanism comprises more than one elementary step. Looking at the complex reaction in question much information can be deduced such as catalyst, interme diate and the rate laws that may be predicted from these kinetic mechanisms. The rate determining step is the slowest step which is B + C → slow D + E The rate equation is R a t e ∞ [ B ] [ C ] R a t e = k [ B ] [ C ]

Given the following steps in the mechanism for a chemical reaction (a) A + B ⟶ fast C (b) B + C ⟶ slow D + E (c) D + F ⟶ fast A + E What is the overall order of the reaction?

In kinetics, the term 'complex reaction' simply refers to a reaction whose mechanism comprises more than one elementary step. Looking at the complex reaction in question many information can be deduced such as catalyst ,intermediate and the rate laws that may be predicted from this kinetic mechanisms. If we closely study and classify the elements of this reaction then we find that, specieA = catalyst = remains same through out the reaction . specie B = its twice the concentration is present on Left Hand Side and not any on Left hand side , means it is the reactant and is consumed completely . Not remaining . specie C = intermediate specie D = intermediate specie E = Product which is formed in the right hand side only . specie F = act as reactant as it is present on Right hand side . The equation can be finally be written as - 2 B + F → A 2 E { RDS } rate ∞ [ B ] 2 [ F ] Rate of reaction = k [ B ] 2 [ F ] In order to determine the reaction order , the power - law form of the rate equation is generally used . The expression of this form of the rate law is given by r = k [ A ] x [ B ] y . order of the equation is x + y in this case 2 + 1 = 3

E M B I B E

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 11

EASY

12th West Bengal Board

IMPORTANT

Earn 100

Given the following steps in the mechanism for a chemical reaction
(a) $A + B \overset{fast}{⟶} C$
(b) $B + C \overset{slow}{⟶} D + E$
(c) $D + F \overset{fast}{⟶} A + E$
Identify which species are-Intermediates.

Important Questions on Chemical Kinetics

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 11

Given the following steps in the mechanism for a chemical reaction
(a) $A + B \overset{fast}{⟶} C$
(b) $B + C \overset{slow}{⟶} D + E$
(c) $D + F \overset{fast}{⟶} A + E$

Write the rate equation for the rate determining step.

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 11

Given the following steps in the mechanism for a chemical reaction
(a) $A + B \overset{fast}{⟶} C$
(b) $B + C \overset{slow}{⟶} D + E$
(c) $D + F \overset{fast}{⟶} A + E$
Given that the concentration of $C$ is directly proportional to the concentration of $A$ , rewrite the rate equation so that it includes the concentration terms for only reactants and products and not intermediates.

EASY

12th West Bengal Board

IMPORTANT

NEW SYSTEMATIC MODERN CHEMISTRY>Chapter 4 - Chemical Kinetics>REVIEW EXERCISES>Q 11

Given the following steps in the mechanism for a chemical reaction
(a) $A + B \overset{fast}{⟶} C$
(b) $B + C \overset{slow}{⟶} D + E$
(c) $D + F \overset{fast}{⟶} A + E$
What is the overall order of the reaction?