10H)₂+
()
b) Ni2+
a) N:
d) Cd?
214(aq) + Bra()
2Br(aq)+12(8)
b) The l'ion is oxidized, and its oxidation number decreases
c) The l' ion is reduced, and its oxidation number increases
d) The lion is reduced, and its oxidation number decreases
What species is oxidized during the discharge of the batter
46. Given the redox reaction:
What occurs during this reaction?
a) The l' ion is oxidized, and its oxidation number increases
Answers
Answer:
What is the oxidation number of nitrogen in the NO A)- ion? B)+1 C) +2 D) +5 E) +7 7) The reduction half reaction occurring in the standard hydrogen electrode is A) H2 (g. 1 atm) B) 2H (aq) + 20H H20 () 2H (aq, 1M)+2e C) 02 (g)+4H (aq)+ 4e D) 2H (aq, IM) 2e E) 2H (aq, IM) + Cl2 (aq) 2H20 ) H2 (g. 1 atm) 2HCI (aq) 8) In a voltaic cell, electrons flow from the A) salt bride, anode B) anode, salt bridge C) cathode, anode D) salt bridge, cathode E) anode, cathode to the 9) Which of the following reactions is a redox reaction? D K2CrO4BaCl2 (II) Pb22+ +2Br 2PbBr (III) Cu +S CuS BaCrO4 + 2KCI E) (II) and (III) D) () and (II) B) (II) only C) (III) only A) (I) only 10) Which of the halogens below is the strongest oxidizing agent? A) Cl2 E) All of the healogens have equal strength as oxidizing agents. D) 12 C) F2 B) Br2 11) All of the following have free energy values of zero except A) H2 (g) D) Fe (s) E) Na (s) C) He (g) B) N (g) 12) Consider an electrochemical cell based on the reaction: 2H+ (aq) Sn2+ (aq) H2 (g) Snsalt bridge, cathode E) anode, cathode to the 9) Which of the following reactions is a redox reaction? D K2CrO4BaCl2 (II) Pb22+ +2Br 2PbBr (III) Cu +S CuS BaCrO4 + 2KCI E) (II) and (III) D) () and (II) B) (II) only C) (III) only A) (I) only 10) Which of the halogens below is the strongest oxidizing agent? A) Cl2 E) All of the healogens have equal strength as oxidizing agents. D) 12 C) F2 B) Br2 11) All of the following have free energy values of zero except A) H2 (g) D) Fe (s) E) Na (s) C) He (g) B) N (g) 12) Consider an electrochemical cell based on the reaction: 2H+ (aq) Sn2+ (aq) H2 (g) Sn (s) Which of the following actions would change the measured cell potential? A) increasing the pH in the cathode compartment B) lowering the pH in the cathode compartment: C) increasing the [Sn2+] in the anode compartment D) increasing the pressure of hydrogen gas in the cathode compartment E) Any of the above will change the measure cell potential. 13) One of the differences between a voltaic cell and an electrolytic cell is that in an electrolytic cell.... A) an electric current is produced bya chemical reaction B) electrons flow toward the anode C) a nonspontaneous reaction is forced to occur D) 02 gas is produced at the cathode E) oxidation occurs at the cathode