AP Chemistry
9.11 Electrolysis and Faraday’s Law
9.9 Cell Potential and Free Energy
9.8 Galvanic (Voltaic) and Electrolytic Cells
An electrolytic cell is set up using inert platinum electrodes immersed in a \(1.0\text{ M }\text{NaBr(aq)}\) solution at \(298\text{ K}\). A direct current is applied to drive the nonspontaneous process.
Based on the standard reduction potentials in the table, which of the following correctly identifies the chemical species reduced at the cathode and the chemical species oxidized at the anode?
| Half-reaction | \(E^\circ\text{ at } 298\text{ K}\) |
|---|---|
| \(\text{Na}^+\text{(aq)} + e^- \rightarrow \text{Na(s)}\) | \(-2.71\text{ V}\) |
| \(2\text{H}_2\text{O}(l) + 2e^- \rightarrow \text{H}_2\text{(g)} + 2\text{OH}^-\text{(aq)}\) | \(-0.83\text{ V}\) |
| \(\text{Br}_2(l) + 2e^- \rightarrow 2\text{Br}^-\text{(aq)}\) | \(+1.07\text{ V}\) |
| \(\text{O}_2\text{(g)} + 4\text{H}^+\text{(aq)} + 4e^- \rightarrow 2\text{H}_2\text{O}(l)\) | \(+1.23\text{ V}\) |
Based on the standard reduction potentials in the table, which of the following correctly identifies the chemical species reduced at the cathode and the chemical species oxidized at the anode?
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