9. Which is the oxidizing agent in the redox reaction below? Sb3+(aq) + Bi5+(aq) Bi3+(aq) + Sb5+(aq) → (A) Bi3+(aq) (B) Bi5+(aq) (C) Sb3+(aq) (D) Sb5+(aq) 10. Which component in the cell diagram below is the salt bridge? (A) A (B) B (C) C (D) D 11. The half reaction shown below is unbalanced. Under acid conditions, how many electrons are needed to balance the half reaction, and upon which side are the electrons found? SO42- S → Number of Electrons Side of Reaction (A) 6 Products (B) 6 Reactants (C) 8 Products (D) 8 Reactants 12. Which species is reduced in the cell notation shown below? Pb(s) | Pb2+(aq) || Ag+(aq) | Ag(s) (A) Ag(s) (B) Ag+(aq) (C) Pb(s) (D) Pb2+(aq) 13. What is required in an electrolytic cell but is not required in an electrochemical cell? (A) anode (B) battery (C) cathode (D) voltmeter 14. What is the voltage produced in the electrochemical cell below? (A) -1.10 V (B) -0.42 V (C) +0.42 V (D) +1.10 V 15. How many minutes does it take to plate 8.58 x 10-3 moles of Ag(s) onto the cathode of an electrolytic cell using a current of 1.55 A? (A) 2.97 min (B) 8.90 min (C) 178 min (D) 534 min
9. Which is the oxidizing agent in the redox reaction below? Sb3+(aq) + Bi5+(aq) → Bi3+(aq) + Sb5+(aq) (A) Bi3+(aq) (B) Bi5+(aq) (C) Sb3+(aq) (D) Sb5+(aq) 10. Which component in the cell diagram below is the salt bridge? (A) A (B) B (C) C (D) D 11. The half reaction shown below is unbalanced. Under acid conditions, how many electrons are needed to balance the half reaction, and upon which side are the electrons found? SO42- → S Number of Electrons Side of Reaction (A) 6 Products (B) 6 Reactants (C) 8 Products (D) 8 Reactants 12. Which species is reduced in the cell notation shown below? Pb(s) | Pb2+(aq) || Ag+(aq) | Ag(s) (A) Ag(s) (B) Ag+(aq) (C) Pb(s) (D) Pb2+(aq) 13. What is required in an electrolytic cell but is not required in an electrochemical cell? (A) anode (B) battery (C) cathode (D) voltmeter 14. What is the voltage produced in the electrochemical cell below? (A) -1.10 V (B) -0.42 V (C) +0.42 V (D) +1.10 V 15. How many minutes does it take to plate 8.58 x 10-3 moles of Ag(s) onto the cathode of an electrolytic cell using a current of 1.55 A? (A) 2.97 min (B) 8.90 min (C) 178 min (D) 534 min
electro_test_2017.docx