NEET Exam  >  NEET Questions  >  For the reaction A+ B gives C+ D , doubling t... Start Learning for Free
For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is?
Most Upvoted Answer
For the reaction A+ B gives C+ D , doubling the concentration of both ...
Rate Law for the Reaction A + B ⟶ C + D

The rate law for a chemical reaction expresses the relationship between the rate of the reaction and the concentrations of the reactants. In this case, we need to determine the rate law for the reaction A + B ⟶ C + D based on the given information.

Step 1: Comparing Concentration Changes and Rate Changes

According to the given information, doubling the concentration of both reactants (A and B) increases the rate by 8 times. This implies that the rate is directly proportional to the concentration of both A and B, raised to a power, let's call it 'n'.

We can express this relationship using the following equation:

Rate ∝ [A]^m [B]^n

Where [A] and [B] are the concentrations of reactants A and B, respectively, and m and n are the respective reaction orders for A and B.

Step 2: Doubling the Concentration of B

The second piece of information states that doubling the initial concentration of reactant B simply doubles the reaction rate. This suggests that the rate is directly proportional to the concentration of B, raised to the power of 1. Therefore, the reaction order for B is 1.

Rate ∝ [A]^m [B]^1

Step 3: Doubling the Concentration of Both Reactants

When both reactants A and B are doubled in concentration, the rate increases by 8 times. This can be expressed as:

Rate (2[A])^m (2[B])^1 = 8 * Rate [A]^m [B]^1

Simplifying the equation, we get:

2^m * 2 = 8

2^(m+1) = 8

2^(m+1) = 2^3

m + 1 = 3

m = 2

Step 4: Final Rate Law Expression

Now that we have determined the reaction order for A and B, we can write the rate law expression for the given reaction:

Rate = k [A]^2 [B]

Where k is the rate constant.

Summary:

The rate law for the reaction A + B ⟶ C + D is:

Rate = k [A]^2 [B]

This means that the rate of the reaction is directly proportional to the square of the concentration of A and the concentration of B, and the proportionality constant is represented by k.
Community Answer
For the reaction A+ B gives C+ D , doubling the concentration of both ...
(A)² (B)¹
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
Explore Courses for NEET exam

Similar NEET Doubts

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: Rate of reaction is a measure of change in concentration of reactant with respect to time.Reason: Rate of reaction is a measure of change in concentration of product with respect to time.

Read the passage given below and answer the following questions:The rate of a reaction, which may also be called its velocity or speed, can be defined with relation to the concentration of any of the reacting substances, or to that of any product of the reaction. If the species chosen is a reactant which has a concentration c at time t the rate is - dc/dt, while the rate with reference to a product having a concentration x at time t is dx/dt. Any concentration units may be used for expressing the rate; thus, if moles per liter are employed for concentration and seconds for the time, the units for the rate are moles litre–1sec–1. For gas reactions pressure units are sometimes used in place of concentrations, so that legitimate units for the rate would be (mm. Hg) sec–1 and atm. sec–1 The order of a reaction concerns the dependence of the rate upon the concentrations of reacting substances; thus, if the rate is found experimentally to be proportional to the ath power of the concentration of one of the reactants A, to the both power of the concentration of a second reactant B, and so forth, via., rate = k CAα CAβ the over-all order of the reaction is simply n = α + β + ----- (2) Such a reaction is said to be of the αth order with respect to the substance A, the βth order with respect to B.In the following questions, a statement of Assertion followed by a statement of Reason is given. Choose the correct answer out of the following choices on the basis of the above passage.Assertion: The unit of k is independent of order of reaction.Reason: The unit of k is moles L–1s–1.

Top Courses for NEET

For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is?
Question Description
For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is?.
Solutions for For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? defined & explained in the simplest way possible. Besides giving the explanation of For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is?, a detailed solution for For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? has been provided alongside types of For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? theory, EduRev gives you an ample number of questions to practice For the reaction A+ B gives C+ D , doubling the concentration of both the reactants increases the rate by 8 times and doubling initial concentration of only B simply doubles the reaction rate .the rate law is? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses
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