Match the statements given in Column I and Column II Column I Column II (i) Catalyst alters the rate of reaction (a) cannot be fraction or zero (ii) Molecularity (b) proper orientation is not there always (iii) Second half life of first order reaction (c) by lowering the activation energy (iv) e - E a / RT (d) is same as the first (v) Energetically favourable reactions are sometimes slow (e) total probability is one (vi) Area under the Maxwell Boltzmann curve is constant (f) refers to the fraction of molecules with energy equal to or greater than activation energy

(i) Catalyst can alter the rate of reaction by lowering the activation energy. (ii) Molecularity can be integer numbers but cannot be zero or fraction. (iii) Second half life of first order reaction is same as the first half life since it is independent of concentration. (iv) In the Arrhenius equation, the factor e - E a / RT corresponds to the fraction of molecules that have energy equal to or greater than E a . (v) Energetically favourable reactions are sometimes slow due to improper orientation of molecules during collision. (vi) The area under the Maxwell Boltzmann distribution curve is constant since the total probability is one (fraction of molecules remains same). Column I Column II (i) Catalyst alters the rate of reaction (c) by lowering the activation energy (ii) Molecularity (a) cannot be fraction or zero (iii) Second half life of first order reaction (d) is same as the first (iv) e - E a / RT (f) refers to the fraction of molecules with energy equal to or greater than activation energy (v) Energetically favourable reactions are sometimes slow (b) proper orientation is not there always (vi) Area under the Maxwell Boltzmann curve is constant (e) total probability is one

Match the items of Column I and Column II. Column I Column II (i) Diamond (a) short interval of time (ii) Instantaneous rate (b) ordinarily rate of conversion is imperceptible (iii) Average rate (c) long duration of time

(i) Rate of conversion of diamond is imperceptible because it requires high activation energy. Diamond cannot be converted into graphite under ordinary condition. (ii) Instantaneous rate of a reaction is rate of a reaction at a particular moment of time. Instantaneous rate of reaction complete at very short span of time. (iii) Average rate is obtained by dividing the change in concentration of any one of the reactant or product by the time taken for the change i.e. ∆ x ∆ t . Average rate of reaction occurs to a long duration of time. Column I Column II (i)Diamond (b)ordinarily rate of conversion is imperceptible (ii)Instantaneous rate (a)short interval of time (iii)Average rate (c)Long duration of time

Match the items of Column I and Column II. Column I Column II (i) Mathematical expression for the rate of reaction (a) rate constant (ii) Rate of reaction for the zero-order reaction is equal to (b) rate law (iii) Units of rate constant for the zero-order reaction is same as that of (c) order of slowest step (iv) Order of a complex reaction is determined by (d) rate of a reaction

(i) Mathematical expressions for rate of a reaction can be given by rate law. It can be written by the known concentrations. (ii) Rate for zero order reaction: rate = k reactant 0 = k rate constant (iii) It is very clear from above that unit of rate constant = rate of the reaction. (iv) Order of a complex reaction is determined by the slowest step which is known as rate determining step. Column I Column II (i) Mathematical expression for the rate of reaction (b) rate law (ii) Rate of reaction for the zero-order reaction is equal to (a) rate constant (iii) Units of rate constant for the zero-order reaction is same as that of (d) rate of reaction (iv) Order of a complex reaction is determined by (c) Order of slowest step

E M B I B E

NCERT Exemplar Chemistry - Class 12>Chapter 4 - Chemical Kinetics>Matching Type

Matching Type

Author:NCERT

NCERT Chemistry Solutions for Exercise - Matching Type

Simple step-by-step solutions to Matching Type questions of Chemical Kinetics from NCERT Exemplar Chemistry - Class 12. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Matching Type with Hints & Solutions

MEDIUM

12th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 12>Chapter 4 - Chemical Kinetics>Matching Type>Q 53

Match the graph given in Column I with the order of reaction given in Column II. More than one item in Column I may link to the same item of Column II.

Column I	Column II
(i)
(ii)	(a) Ist order
(iii)	(b) Zero order
(iv)

EASY

12th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 12>Chapter 4 - Chemical Kinetics>Matching Type>Q 54

Match the statements given in Column I and Column II

Column I	Column II
(i) Catalyst alters the rate of reaction	(a) cannot be fraction or zero
(ii) Molecularity	(b) proper orientation is not there always
(iii) Second half life of first order reaction	(c) by lowering the activation energy
(iv) $e^{- E_{a} / RT}$	(d) is same as the first
(v) Energetically favourable reactions are sometimes slow	(e) total probability is one
(vi) Area under the Maxwell Boltzmann curve is constant	(f) refers to the fraction of molecules with energy equal to or greater than activation energy

MEDIUM

12th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 12>Chapter 4 - Chemical Kinetics>Matching Type>Q 55

Match the items of Column I and Column II.

Column I	Column II
(i) Diamond	(a) short interval of time
(ii) Instantaneous rate	(b) ordinarily rate of conversion is imperceptible
(iii) Average rate	(c) long duration of time

MEDIUM

12th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 12>Chapter 4 - Chemical Kinetics>Matching Type>Q 56

Match the items of Column I and Column II.

Column I	Column II
(i) Mathematical expression for the rate of reaction	(a) rate constant
(ii) Rate of reaction for the zero-order reaction is equal to	(b) rate law
(iii) Units of rate constant for the zero-order reaction is same as that of	(c) order of slowest step
(iv) Order of a complex reaction is determined by	(d) rate of a reaction

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