Chemistry Exam  >  Chemistry Questions  >  Starting with one mole of a compound A it is ... Start Learning for Free
Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:           
  • a)
    2.31 min–1              
  • b)
    0.231 min–1
  • c)
    0.0231 min–1
  • d)
    0.00231 min–1
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Starting with one mole of a compound A it is found that the reaction i...
To solve this problem, we can use the first-order reaction equation:

ln([A]t/[A]0) = -kt

Where [A]t is the concentration of compound A at time t, [A]0 is the initial concentration of compound A, k is the rate constant, and t is the time.

Given that the reaction is 3/4th complete in one hour, we can say that [A]t/[A]0 = 1/4. Plugging this into the equation, we have:

ln(1/4) = -k(1 hour)

Simplifying, we have:

-2.3026 = -k(1 hour)

Dividing both sides by -1, we have:

2.3026 = k(1 hour)

Rearranging the equation, we have:

k = 2.3026 / (1 hour)

Since the question asks for the rate constant in minutes, we need to convert hours to minutes. There are 60 minutes in one hour, so:

k = 2.3026 / (1 hour) * (60 minutes / 1 hour)

Simplifying, we have:

k = 2.3026 * 60 / 1

k = 138.156

Therefore, the rate constant is approximately 138.156 min^-1. Answer: None of the above.
Explore Courses for Chemistry exam
Question Description
Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer? for Chemistry 2025 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer?.
Solutions for Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. 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 Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Starting with one mole of a compound A it is found that the reaction is 3/4th complete in one hour. If the reaction is first order, the rate constant is:a)2.31 min–1 b)0.231 min–1c)0.0231 min–1d)0.00231 min–1Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Chemistry tests.
Explore Courses for Chemistry exam
Signup to solve all Doubts
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev