AP Chemistry
5.11 Catalysis
5.6 Reaction Energy Profile
A student investigates an enzyme that catalyzes the reversible reaction
\(\text{X(aq)} \rightleftharpoons \text{Y(aq)}\)
The student measures the forward and reverse rate constants over a temperature range in which the enzyme remains active. For each direction, the student constructs a plot of \(\ln k\) versus \(1/T\), for which the slope is \(-E_a/R\). The student also measures the equilibrium concentration ratio after starting separate trials with only \(\text{X(aq)}\) or only \(\text{Y(aq)}\).
Which set of results provides the strongest evidence that the enzyme lowers the activation energy without altering the thermodynamic equilibrium?
\(\text{X(aq)} \rightleftharpoons \text{Y(aq)}\)
The student measures the forward and reverse rate constants over a temperature range in which the enzyme remains active. For each direction, the student constructs a plot of \(\ln k\) versus \(1/T\), for which the slope is \(-E_a/R\). The student also measures the equilibrium concentration ratio after starting separate trials with only \(\text{X(aq)}\) or only \(\text{Y(aq)}\).
Which set of results provides the strongest evidence that the enzyme lowers the activation energy without altering the thermodynamic equilibrium?
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