Example 17.3 Using Cell Notation Consider a galvanic cell consisting of 2Cr(s) + 3Cu²+(aq) → 2Cr³+ (aq) + 3Cu(s) Write the oxidation and reduction half-reactions and write the reaction using cell notation. Which reaction occurs at the anode? The cathode? oxidation: 2 Cr(s) reduction: 3 Cu2+ (aq) + 6e- 2 Cr3+(aq) + 6e- 3 Cu(s) The oxidation reaction (Cr (s) → Cr3+) occurs at the anode The reduction reaction (Cu2+ Cu(s)) occurs at the cathode Cell Notation: Cr (s) | Cr3+ (aq) || Cu2+ (aq) | Cu (s)

Chemistry & Chemical Reactivity
10th Edition
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Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter19: Principles Of Chemical Reactivity: Electron Transfer Reactions
Section: Chapter Questions
Problem 8PS: A voltaic cell is constructed using the reaction Mg(s) + 2H+(aq) Mg2+(aq) + H2(g) (a) Write...
Question

Given the cell notation for a redox reaction, give the balanced overall redox reaction. How do you go about that problem? Can you explain in detail?

Example 17.3
Using Cell Notation
Consider a galvanic cell consisting of
2Cr(s) + 3Cu²+(aq) → 2Cr³+ (aq) + 3Cu(s)
Write the oxidation and reduction half-reactions and write the reaction using cell notation. Which reaction
occurs at the anode? The cathode?
oxidation:
2 Cr(s)
reduction: 3 Cu2+ (aq) + 6e-
2 Cr3+(aq) + 6e-
3 Cu(s)
The oxidation reaction (Cr (s) → Cr3+) occurs at the anode
The reduction reaction (Cu2+ Cu(s)) occurs at the cathode
Cell Notation:
Cr (s) | Cr3+ (aq) || Cu2+ (aq) | Cu (s)
Transcribed Image Text:Example 17.3 Using Cell Notation Consider a galvanic cell consisting of 2Cr(s) + 3Cu²+(aq) → 2Cr³+ (aq) + 3Cu(s) Write the oxidation and reduction half-reactions and write the reaction using cell notation. Which reaction occurs at the anode? The cathode? oxidation: 2 Cr(s) reduction: 3 Cu2+ (aq) + 6e- 2 Cr3+(aq) + 6e- 3 Cu(s) The oxidation reaction (Cr (s) → Cr3+) occurs at the anode The reduction reaction (Cu2+ Cu(s)) occurs at the cathode Cell Notation: Cr (s) | Cr3+ (aq) || Cu2+ (aq) | Cu (s)
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