All Courses
Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity Get the App Login Join for Free
Sign in Open App
JEE Exam  >  JEE Questions  >   An auto catalytic reaction is represented as... Start Learning for Free
SaveJoin the Discussion on the App
An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-
  • a)
    An autocatalytic reaction is the such reaction in which product itself increases the speed of reaction
  • b)
    In an autocatalytic reaction product form a complex of lower activation energies.
  • c)
    The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3
  • d)
    The overall order of the above reaction is three
Correct answer is option 'A,C'. Can you explain this answer?
FREE This question is part of
Download PDF Attempt Test
Download PDF Attempt this Test
Most Upvoted Answer
An auto catalytic reaction is represented as A + B ⟶ D Where initial ...
∴ at the maximum rate, dr/dx = 0
∴ x = a0 or x = a0/3
But x ≠ a0 ∴ x = a0/3
Free Test
FREE
Start Free Test
Start Free Test
Community Answer
An auto catalytic reaction is represented as A + B ⟶ D Where initial ...
An autocatalytic reaction is a type of reaction where the product itself acts as a catalyst, meaning it increases the rate of the reaction. Let's analyze the given options to understand why options A and C are correct.

a) An autocatalytic reaction is the such reaction in which product itself increases the speed of reaction.

In an autocatalytic reaction, the product formed in the reaction acts as a catalyst, meaning it increases the rate of the reaction. In the given reaction, the product D is being formed, and if it acts as a catalyst, it will increase the speed of the reaction. Therefore, option A is correct.

c) The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3.

To determine the maximum rate of the reaction, we need to find the concentration of D at which the rate is highest. Since we are given that the initial concentration of D is zero, the concentration of D will increase as the reaction proceeds. As the concentration of D increases, it will act as a catalyst and enhance the rate of the reaction. However, as the concentration of D continues to increase, it will reach a point where the rate of formation of D will start to decrease due to the depletion of reactants A and B. This maximum rate is obtained when the concentration of D is equal to a0/3. Therefore, option C is correct.

b) In an autocatalytic reaction, the product forms a complex of lower activation energies.

This statement is not necessarily true for all autocatalytic reactions. While it is possible for the product to form a complex of lower activation energies in some autocatalytic reactions, it is not a general characteristic of autocatalysis. Therefore, option B is incorrect.

d) The overall order of the above reaction is three.

The overall order of a reaction is the sum of the powers to which the concentration terms are raised in the rate equation. From the given reaction, we can see that the rate of the reaction depends on the concentrations of A and B. However, there is no information given about the specific rate equation or the powers to which the concentration terms are raised. Therefore, we cannot determine the overall order of the reaction from the given information. Therefore, option D is incorrect.

In summary, options A and C are the correct statements regarding autocatalytic reactions. The product of an autocatalytic reaction increases the speed of the reaction, and the maximum rate is obtained when the concentration of the product is a0/3.
< Previous Question Next Question >
Explore Courses for JEE exam

Similar JEE Doubts

Not all chemical reactions proceed to a stage at which the concentrations of the reactants become vanishingly small. Here we consider the kinetics of such reactions.Let a reaction be represented in general terms by the schemewhere k., and k_., represent the rate constants for the forwards and reverse reactions, respectively. The equilibrium constant for this reaction may be written asK = [B] /[A] = K1/K1 --(1)where the subscript 00 refers to a time t, sufficiently long to establish equilibrium at the given temperature. The initial concentration of species A is [A]O, and that of B is [B]O . After a time t, let the concentration of species A be [A/t and that of B be [Bat. The total rate of change of [At is given byd[A]t/dt= - K1[A]t + k-1[B]tIf, as is usual, [B]O is initially zero, it follows from a mass balance that at any time t,[Bat = [A]0 - [A]t, whenced[A]t/dt = K1[A]t + k-1([A]O - [A]t)ord[A]t/dt = (K1 + k-1)At what time is the rate of change of concentration of A equal to rate of change of concentration of C in magnitude ?

Not all chemical reactions proceed to a stage at which the concentrations of the reactants become vanishingly small. Here we consider the kinetics of such reactions.Let a reaction be represented in general terms by the schemewhere k., and k_., represent the rate constants for the forwards and reverse reactions, respectively. The equilibrium constant for this reaction may be written asK = [B] /[A] = K1/K1 --(1)where the subscript 00 refers to a time t, sufficiently long to establish equilibrium at the given temperature. The initial concentration of species A is [A]O, and that of B is [B]O . After a time t, let the concentration of species A be [A/t and that of B be [Bat. The total rate of change of [At is given byd[A]t/dt= - K1[A]t + k-1[B]tIf, as is usual, [B]O is initially zero, it follows from a mass balance that at any time t,[Bat = [A]0 - [A]t, whenced[A]t/dt = K1[A]t + k-1([A]O - [A]t)ord[A]t/dt = (K1 + k-1)For the reaction (having both 1ts order reactions), the concentration as a function of time are given for a certain experimental run along with a tangent to the graph at the origin. The ratio of the magnitude of the slopes of the graph of [A/ and [C/ at the origin would be

There are many reactions which obey a first order rate equation although it reality they are bi- or ter-molecular. As an example of these may be taken the decomposition of Carbonyl sulfide in water, namely, COS + H20 002 + H2SAccording to the law of mass action this reaction should be second order with the rate dependent on the concentration of both the carbonyl sulfide and the water. Actually however, the rate is found to be first order with respect to the carbonyl sulfide and independent of the water Reactions exhibiting such behaviour are said to be pseudo-molecular.The pseudo-unimoecuar nature of this reaction is explainable by the fact that water is present in such excess that its concentration remains practically constant during the course of the reaction. Under these condition b x = b, and the rate equation becomesOn integration this leads towhich is the equation for a first order reaction. It is evident, however, that the now constant k is not independent of the concentration, as is the case with true first order constants, but may vary with b if the latter is changed appreciably, When such is the case, the true constant k2 can be obtained from k by dividing the latter by b. pseudo-molecular reactions are encountered whenever one or more of the reactants remain constants during the course of an experiment. This is the case with reactions conducted in solvents which are themselves one of the reactants, as in the decomposition of carbonyl sulfide in water, or in the esterification of acetic anhydride in alcohol(CH3C0)20 + 2C2H5OH 2CH3C00C2H5 + H20Again, this is also true of reactions subject to catalysis, in which case the concentration of the catalyst does not change. The decomposition of diacetone alcohol to acetone in aqueous solution is catalysed by hydroxyl ions, with the rate proportional to the concentration of the alcohol and that of the base. Since the concentration of the base does not change within any one experiment, however, the rate equation reduces to one of first order with respect to the alcohol. But the rateconstant k obtained for various concentrations of base are not identical, as may be seen from table. To obtain from these the true second order velocity constant, the ks must be divided by the hydroxyl ion concentration. When this is done excellent k2 values result, as column 3 indicatesTable : Decomposition of diacetone alcohol in water at 25C (Catalyst : NaOH)Q.By what factor does the rate of reaction of diacetone alcohol in water solution change if p0H is increased by 2 units other things remaining same ?

The rate of chemical reaction at a particular temperature is proportional to the product of the molar concentration of reactants with each concentration term raised to the power equal to the number of molecules of the respective reactant taking part in the reaction. aA + bB products, rate of reaction a [Aka [Bib = k [Aka [Bib, where k is the rate constant of the reaction.EQUILIBRIUM CONSTANT (k) For a general reaction aA + bB = cC + dD, forward rate rf = kf [A]a [B]b, backward rate rb = kb [Cicpyi ,concentrations of reactants products at equilibrium are related bywhere all theconcentrations are expressed in mole/liter.In the expression of equilibrium constant those components are kept whose concentration changes with time.If equilibrium is estabilished by taking all the components in the reaction then to predict the direction of reactions we calculate the reaction quotient (Q).The values of expression at any time during reaction is called reaction quotient if Q Kc reaction proceed in backward direction until equilibrium in reached if Q Kc reaction will proceed in forward direction until equilibrium is established if Q = KC Reaction is at equilibriumQ.Initial concentration of A is twice the initial concentration of `B. At equilibrium concentration of A and a are same then equilibrium constant for the reaction is

The rate of chemical reaction at a particular temperature is proportional to the product of the molar concentration of reactants with each concentration term raised to the power equal to the number of molecules of the respective reactant taking part in the reaction. aA + bB products, rate of reaction a [Aka [Bib = k [Aka [Bib, where k is the rate constant of the reaction.EQUILIBRIUM CONSTANT (k) For a general reaction aA + bB = cC + dD, forward rate rf = kf [A]a [B]b, backward rate rb = kb [Cicpyi ,concentrations of reactants products at equilibrium are related bywhere all theconcentrations are expressed in mole/liter.In the expression of equilibrium constant those components are kept whose concentration changes with time.If equilibrium is estabilished by taking all the components in the reaction then to predict the direction of reactions we calculate the reaction quotient (Q).The values of expression at any time during reaction is called reaction quotient if Q Kc reaction proceed in backward direction until equilibrium in reached if Q Kc reaction will proceed in forward direction until equilibrium is established if Q = KC Reaction is at equilibriumq.Above homogeneous reaction is carried out in a 2 litre container at a particular temperature by taking 1 mole each of A, B, C and D respectively. If Kc for the reaction is then equilibrium concentration of C is

Top Courses for JEEView all

Top Courses for JEE

An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer?
Question Description
An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer?.
Solutions for An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer?, a detailed solution for An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? has been provided alongside types of An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice An auto catalytic reaction is represented as A + B ⟶ D Where initial concentrations of A and B Each equal to a0. If initial concentration of D Is zero-a)An autocatalytic reaction is the such reaction in which product itself increases the speed of reactionb)In an autocatalytic reaction product form a complex of lower activation energies.c)The maximum rate for the above autocatalytic reaction is obtained when [D] = a0/3d)The overall order of the above reaction is threeCorrect answer is option 'A,C'. Can you explain this answer? tests, examples and also practice JEE tests.
Explore Courses for JEE exam

Top Courses for JEE

Explore Courses

Suggested Free Tests

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Get App
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup