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Which of the following statement is true for order of a reaction?
  • a)
    It can have fractional value
  • b)
    It depends on the stiochiometric coefficients of reactants as well as products
  • c)
    It cannot be determined experimentally
  • d)
    It can be written from the balanced chemical equation
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following statement is true for order of a reaction?a)It ...
Order of a reaction is experimentally determined quantity so it can be negative fractional or zero.
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Which of the following statement is true for order of a reaction?a)It ...
**Explanation:**
The order of a reaction is a measure of how the concentration of reactants affects the rate of the reaction. It is determined experimentally by studying the rate of reaction under different conditions, such as varying the concentration of reactants.

The statement that is true for the order of a reaction is:
**a) It can have a fractional value.**

This means that the order of a reaction is not limited to whole numbers; it can also be a fraction or a decimal. The order of a reaction is determined by the rate equation derived from experimental data, which relates the rate of the reaction to the concentrations of the reactants.

**Reasoning:**

The order of a reaction is not necessarily related to the stoichiometric coefficients of the reactants and products. The stoichiometric coefficients only indicate the ratio in which the reactants combine to form products, but they do not determine the order of the reaction.

The order of a reaction cannot be determined solely from the balanced chemical equation. The balanced equation only provides information about the stoichiometry of the reaction, not the rate at which it occurs.

The order of a reaction can only be determined experimentally by studying the rate of the reaction under different conditions. By varying the concentrations of the reactants and measuring the corresponding rates, the order of the reaction can be determined.

**Example:**

Let's consider a hypothetical reaction:
A + B -> C

If the rate equation for this reaction is determined to be:
Rate = k[A]^0.5[B]^2

Then the order of the reaction with respect to A is 0.5 and with respect to B is 2. These values are not whole numbers but fractional and integer values, respectively. Hence, the order of a reaction can have a fractional value, which supports the statement a) as the correct answer.
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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: 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.

Which of the following statement is true for order of a reaction?a)It can have fractional valueb)It depends on the stiochiometric coefficients of reactants as well as productsc)It cannot be determined experimentallyd)It can be written from the balanced chemical equationCorrect answer is option 'A'. Can you explain this answer?
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Which of the following statement is true for order of a reaction?a)It can have fractional valueb)It depends on the stiochiometric coefficients of reactants as well as productsc)It cannot be determined experimentallyd)It can be written from the balanced chemical equationCorrect 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 Which of the following statement is true for order of a reaction?a)It can have fractional valueb)It depends on the stiochiometric coefficients of reactants as well as productsc)It cannot be determined experimentallyd)It can be written from the balanced chemical equationCorrect 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 Which of the following statement is true for order of a reaction?a)It can have fractional valueb)It depends on the stiochiometric coefficients of reactants as well as productsc)It cannot be determined experimentallyd)It can be written from the balanced chemical equationCorrect answer is option 'A'. Can you explain this answer?.
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