Using the table attached: You want to assemble a Daniell (galvanic) cell in whic

Question

Using the table attached:

You want to assemble a Daniell (galvanic) cell in which one half-reaction is Cu2+ + 2e- -> Cu(s) (or the reverse!) and the other is Cr3+ + 3e- -> Cr(s) (or the reverse!).

A) Give the balanced overall redox reaction and show how you determine the overall standard cell potential.

(Remember: In a galvanic cell, the reaction will always go in the direction that gives a favored potential.)

B) Sketch a diagram of the galvanic cell, labeling the anode, the cathode, the direction of electron flow through the

wire (with arrows), and the direction of cation/anion flow.

Explanation / Answer

3Cu+2 +2 Cr ->3Cu +2Cr+3

Overall standard potential = 0.337-(-0.74) =1.077

cathode is Cupper

anode is Chromium

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