11) Which is the reduction half reaction for a Mg and Ag electrochemical cell? (The reaction is spontaneous.) a) Mg* + 2e → Mg(s) (Mg gains electrons) b) Mg(s) → Mg + 2e (Mg loses electrons) c) Ag + e> Ag (s) (Ag gains electrons) d) Ag(s) → Ag* + e- (Ag loses electrons) 12) In an electrochemical cell made of Al and Cu, Al loses 3 electrons per atom while Cu gains 2 electrons per atom. What are the two half-reactions (oxidation and reduction) combined together and balanced? (A total of 6 electrons should be lost and gained.) a) Al* + Cu(s) → Al (s) + Cu²* b) 2Al* + 3Cu(s) → 2AI (s) + 3Cu2* c) Al (s) + Cu²+ → Al* + Cu(s) d) 2Al (s) + 3CU2*→ 2AI³* + 3Cu(s)

11) Which is the reduction half reaction for a Mg and Ag electrochemical cell? (The reaction is spontaneous.) a) Mg* + 2e → Mg(s) (Mg gains electrons) b) Mg(s) → Mg + 2e (Mg loses electrons) c) Ag + e> Ag (s) (Ag gains electrons) d) Ag(s) → Ag* + e- (Ag loses electrons) 12) In an electrochemical cell made of Al and Cu, Al loses 3 electrons per atom while Cu gains 2 electrons per atom. What are the two half-reactions (oxidation and reduction) combined together and balanced? (A total of 6 electrons should be lost and gained.) a) Al* + Cu(s) → Al (s) + Cu²* b) 2Al* + 3Cu(s) → 2AI (s) + 3Cu2* c) Al (s) + Cu²+ → Al* + Cu(s) d) 2Al (s) + 3CU2→ 2AI³ + 3Cu(s)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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