AP Chemistry
5.3 Concentration Changes Over Time
A student studies the first-order decomposition of a pollutant, \(\text{P}\), in a water-treatment reactor at constant temperature. The student obtains the following data.
In a full-scale treatment system operating under identical conditions, a parcel of water has already spent \(5.0\text{ min}\) in an upstream chamber before entering a polishing chamber. What minimum additional residence time in the polishing chamber is required for \(87.5\%\) of the amount of \(\text{P}\) initially present before upstream treatment to decompose?
| Time elapsed (\(\text{min}\)) | \([\text{P}]\) (\(\mu\text{mol/L}\)) |
|---|---|
| \(0.0\) | \(8.00\) |
| \(7.0\) | \(4.00\) |
| \(14.0\) | \(2.00\) |
In a full-scale treatment system operating under identical conditions, a parcel of water has already spent \(5.0\text{ min}\) in an upstream chamber before entering a polishing chamber. What minimum additional residence time in the polishing chamber is required for \(87.5\%\) of the amount of \(\text{P}\) initially present before upstream treatment to decompose?
Similar Questions
Tools for a 5
AP aligned mock tests to help you get a 5.
With grading, adaptive explanations, and more.
Find a Quiz
Find, solve, and grade every AP FRQ ever.
Find an FRQ
Stuck on AP Chemistry? Get unstuck with an AP specialist.1 to 1 tutors who know the exam inside out. Understand weeks of material in a single session.Book a SessionSee all our elite tutors
Learn AP Physics from scratch, quickly. This is the only course you'll need for the year.
A self-paced course with everything you need to get a 5. Trusted by over 15,000 students and 200+ schools. Learn fast, or we'll refund your purchase, backed by our 100% satisfaction guarantee.
Explore the Course