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Read the passage given below and answer the following questions:
Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e. concentration at different times and rate constant. The integrated rate equations are different for the reactions of different reaction orders. The first-order reaction has a rate constant 1.15 × 10–3s–1.
The following questions are multiple choice questions. Choose the most appropriate answer:
Q. When the rate constant has same units as the rate of reaction, the order of the reaction is:
  • a)
    Zero order
  • b)
    First order
  • c)
    Second order
  • d)
    Fractional order
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Read the passage given below and answer the following questions:Conce...
In case of zero order reaction, the rate constant has same units as the rate of reaction.
r = k [A]0
r = k
Unit of rate = mol L–1s–1
Unit of k = mol L–1s–1
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Most Upvoted Answer
Read the passage given below and answer the following questions:Conce...
Answer:

Explanation:

In order to understand why the answer is option 'A' (Zero order), we need to understand the concept of reaction order and the units of the rate constant.

Reaction Order:
The reaction order of a chemical reaction is determined by the dependence of the reaction rate on the concentration of reactants. It is represented by the exponent to which the concentration term is raised in the rate equation.

Rate Constant:
The rate constant (k) is a proportionality constant that relates the rate of a reaction to the concentrations of reactants. It is specific for a particular reaction at a particular temperature.

Relationship between Rate Constant and Reaction Order:
The rate constant has units that depend on the overall order of the reaction. In a zero-order reaction, the rate of reaction is independent of the concentration of reactants. Therefore, the rate constant has the same units as the rate of reaction.

Explanation of the Answer:
In this question, it is given that the rate constant is 1.15 × 10–3s–1. Since the rate constant has the same units as the rate of reaction, it implies that the reaction is zero order.

Reasoning:
In a zero-order reaction, the rate of reaction is independent of the concentration of reactants. This means that even if the concentration of reactants changes, the rate of reaction remains constant. Therefore, the units of the rate constant and the rate of reaction are the same in a zero-order reaction.

Conclusion:
Based on the given information, we can conclude that when the rate constant has the same units as the rate of reaction, the order of the reaction is zero order.
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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: Reactions can occur at different speeds.Reason: Rate of reaction is also called speed of reaction.

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: For a reaction: P + 2Q → Products, Rate = k [P]1/2[Q]1 so the order of reaction is 1.5Reason: Order of reaction is the sum of stoichiometric coefficients of the reactants.

Read the passage given below and answer the following questions:Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e. concentration at different times and rate constant. The integrated rate equations are different for the reactions of different reaction orders. The first-order reaction has a rate constant 1.15 × 10–3s–1.The following questions are multiple choice questions. Choose the most appropriate answer:Q. When the rate constant has same units as the rate of reaction, the order of the reaction is:a)Zero orderb)First orderc)Second orderd)Fractional orderCorrect answer is option 'A'. Can you explain this answer?
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Read the passage given below and answer the following questions:Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e. concentration at different times and rate constant. The integrated rate equations are different for the reactions of different reaction orders. The first-order reaction has a rate constant 1.15 × 10–3s–1.The following questions are multiple choice questions. Choose the most appropriate answer:Q. When the rate constant has same units as the rate of reaction, the order of the reaction is:a)Zero orderb)First orderc)Second orderd)Fractional orderCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Read the passage given below and answer the following questions:Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e. concentration at different times and rate constant. The integrated rate equations are different for the reactions of different reaction orders. The first-order reaction has a rate constant 1.15 × 10–3s–1.The following questions are multiple choice questions. Choose the most appropriate answer:Q. When the rate constant has same units as the rate of reaction, the order of the reaction is:a)Zero orderb)First orderc)Second orderd)Fractional orderCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Read the passage given below and answer the following questions:Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e. concentration at different times and rate constant. The integrated rate equations are different for the reactions of different reaction orders. The first-order reaction has a rate constant 1.15 × 10–3s–1.The following questions are multiple choice questions. Choose the most appropriate answer:Q. When the rate constant has same units as the rate of reaction, the order of the reaction is:a)Zero orderb)First orderc)Second orderd)Fractional orderCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Read the passage given below and answer the following questions:Concentration dependence of rate is called differential rate equation. Integrated differential equations give relation between directly measured experimental data i.e. concentration at different times and rate constant. The integrated rate equations are different for the reactions of different reaction orders. The first-order reaction has a rate constant 1.15 × 10–3s–1.The following questions are multiple choice questions. Choose the most appropriate answer:Q. When the rate constant has same units as the rate of reaction, the order of the reaction is:a)Zero orderb)First orderc)Second orderd)Fractional orderCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
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