In a spontaneous electrochemical cell, at which electrode does reduction occur? In a spontaneous electrochemical cell, at which electrode does oxidation occur?

Exercise 10 Report Form: Electrochemistry – Galvanic Electrochemical Cells

Name: _________________________________ Date: ____________________

Lab Partner: _____________________________ Instructor: ________________

Electrochemical cells:

Reaction	Zn + Cu²⁺ (0.10 M) ® Zn²⁺ (0.10 M) + Cu	Zn + Fe²⁺ (0.20 M) ® Zn²⁺ (0.10 M) + Fe	Fe + Cu²⁺ (0.10 M) ® Fe²⁺ (0.20 M) + Cu	Zn + Br₂ (sat’d) ® Zn²⁺ (0.10 M) + 2 Br^– (0.5 M)	Cu + Cu²⁺ (0.10 M) ® Cu²⁺ (1.0×10^-5 M) + Cu
(2 points) Measured potential (V)
(2 points) Calculated potential (V)
(2 points) Which substance is oxidized?
(2 points) Which substance acts as the cathode?
(1 point) The e^– flow from which electrode?
(1 point) The e^– flow to which electrode?

(1 point) In a spontaneous electrochemical cell, at which electrode does reduction occur?
(1 point) In a spontaneous electrochemical cell, at which electrode does oxidation occur?
(1 point) In a spontaneous electrochemical cell, electrons flow from which electrode to which electrode?
(2 points) For full credit, show your calculation of the ‘Calculated Potential’ for the Cu/Cu concentration cell.