As the time interval approaches zero the average and instantaneous rate become ?
Correct answer: C. Equal
- A. Negative
- B. Zero
- C. Equal
- D. Positive
Explanation
When considering reaction kinetics, the average rate of reaction over a given time interval is calculated as the change in concentration divided by the change in time. As the time interval becomes infinitesimally small, this average rate approaches the instantaneous rate, which is the rate at a specific point in time. Thus, the average and instantaneous rates become equal as the interval approaches zero. This is why Option C is correct. Options A and D are incorrect as they do not relate to the concept of average and instantaneous rates becoming equal. Option B is incorrect because the rates do not become zero; they converge to be equal.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
Practise Reaction Kinetics
573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.