Chemistry Exam > Chemistry Questions > Consider the unimolecular reaction: A(g) &rar...
Start Learning for Free
Consider the unimolecular reaction: A(g) → products, were made:
(I) The reaction is second order at low pressure and become first order at high pressure.
(II) The reaction is first order at low pressure and become second order at high pressure.
(III) The reaction is zero order.Which of the fo llowing is correct?
(II) The reaction is first order at low pressure and become second order at high pressure.
(III) The reaction is zero order.Which of the fo llowing is correct?
- a)I and II
- b)II and III
- c)Only III
- d)Only I
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Consider the unimolecular reaction: A(g) → products, were made:(I...
Explanation:
The given unimolecular reaction is A(g) → products.
Order of reaction: The order of the reaction is the power to which the concentration of the reactant is raised in the rate law equation.
Rate law equation: The rate law equation for the given unimolecular reaction is Rate = k[A], where k is the rate constant and [A] is the concentration of the reactant A.
(a) I and II are incorrect.
(I) The reaction is second order at low pressure and becomes first order at high pressure.
If the reaction is second order, then the rate law equation should be Rate = k[A]^2. However, the given rate law equation is Rate = k[A]. Therefore, option I is incorrect.
(II) The reaction is first order at low pressure and becomes second order at high pressure.
If the reaction is first order, then the rate law equation should be Rate = k[A]. However, the given information states that the reaction becomes second order at high pressure. Therefore, option II is also incorrect.
(b) II and III are incorrect.
(II) and (III) contradict each other. If the reaction is both first order and zero order, it is impossible. Therefore, option II and III are incorrect.
(c) Only III is incorrect.
(III) The reaction is zero order.
If the reaction is zero order, then the rate law equation should be Rate = k[A]^0 = k. This means that the rate of the reaction is independent of the concentration of the reactant A. Therefore, option III is correct.
Explanation in short:
- The given unimolecular reaction is A(g) → products.
- Order of reaction is the power to which the concentration of the reactant is raised in the rate law equation.
- Rate law equation for the given unimolecular reaction is Rate = k[A], where k is the rate constant and [A] is the concentration of the reactant A.
- Option I and II are incorrect.
- Option III is correct.
- If the reaction is zero order, then the rate law equation should be Rate = k[A]^0 = k.
The given unimolecular reaction is A(g) → products.
Order of reaction: The order of the reaction is the power to which the concentration of the reactant is raised in the rate law equation.
Rate law equation: The rate law equation for the given unimolecular reaction is Rate = k[A], where k is the rate constant and [A] is the concentration of the reactant A.
(a) I and II are incorrect.
(I) The reaction is second order at low pressure and becomes first order at high pressure.
If the reaction is second order, then the rate law equation should be Rate = k[A]^2. However, the given rate law equation is Rate = k[A]. Therefore, option I is incorrect.
(II) The reaction is first order at low pressure and becomes second order at high pressure.
If the reaction is first order, then the rate law equation should be Rate = k[A]. However, the given information states that the reaction becomes second order at high pressure. Therefore, option II is also incorrect.
(b) II and III are incorrect.
(II) and (III) contradict each other. If the reaction is both first order and zero order, it is impossible. Therefore, option II and III are incorrect.
(c) Only III is incorrect.
(III) The reaction is zero order.
If the reaction is zero order, then the rate law equation should be Rate = k[A]^0 = k. This means that the rate of the reaction is independent of the concentration of the reactant A. Therefore, option III is correct.
Explanation in short:
- The given unimolecular reaction is A(g) → products.
- Order of reaction is the power to which the concentration of the reactant is raised in the rate law equation.
- Rate law equation for the given unimolecular reaction is Rate = k[A], where k is the rate constant and [A] is the concentration of the reactant A.
- Option I and II are incorrect.
- Option III is correct.
- If the reaction is zero order, then the rate law equation should be Rate = k[A]^0 = k.
Free Test
FREE
| Start Free Test |
Community Answer
Consider the unimolecular reaction: A(g) → products, were made:(I...
According to Lindemann mechanism,
at low concentration it will be second order and at high concentration it will be 1st order.
at low concentration it will be second order and at high concentration it will be 1st order.
|
Explore Courses for Chemistry exam
|
|
Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer?
Question Description
Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer?.
Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer?.
Solutions for Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the unimolecular reaction: A(g) → products, were made:(I) The reaction is second order at low pressure and become first order at high pressure.(II) The reaction is first order at low pressure and become second order at high pressure.(III) The reaction is zero order.Which of the fo llowing is correct?a)I and IIb)II and IIIc)Only IIId)Only ICorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Chemistry tests.
|
|
Explore Courses for Chemistry exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© 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