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Question 4 0.5 pts Which of the following statements about the salt bridge in a voltaic cell is false? The ions fro...
QUESTION 10 Which of the following statements concerning a voltaic cell is FALSE? A voltaic cell...
QUESTION 10 Which of the following statements concerning a voltaic cell is FALSE? A voltaic cell uses an oxidation-reduction reaction to produce electrical energy. O The oxidation half reaction occurs at the cathode. O The cell consists of two half cells. O At the anode a substance will lose electrons. O The anode and the cathode are separated by a salt bridge.
What is the purpose of a "salt bridge" in a voltaic cell? a) It allows electrons...
What is the purpose of a "salt bridge" in a voltaic cell? a) It allows electrons to flow from the anode through the external circuit to the cathode. b) It is the electrode at which oxidation occurs. c) It is the electrode at which reduction occurs. d) It allows ions to migrate and maintain the electric neutrality in the half cells.
12. All of the following statements concerning voltaic cells are true EXCEPT a) a salt bridge...
12. All of the following statements concerning voltaic cells are true EXCEPT a) a salt bridge allows cations and anions to move between the half-cells. b) electrons flow from the anode to the cathode in the external circuit. c) oxidation occurs at the cathode. d) a voltaic cell can be used as a source of energy, e) a voltaic cell consists of two-half cells. Answer:
All of the following statements concerning voltaic cells are true EXCEPT O a voltaic cell consists...
All of the following statements concerning voltaic cells are true EXCEPT O a voltaic cell consists of two-half cells. electrons flow from the anode to the cathode. reduction occurs at the cathode. a salt bridge allows only cations to move between the half-cells. in the Zn2+/Zn-Cu/Cu2+ voltaic cell, Zn metal is the anode.
Which of the following statements about salt bridges is incorrect? Salt bridges help keep electrical neutrality...
Which of the following statements about salt bridges is incorrect? Salt bridges help keep electrical neutrality in the solutions Salt bridges transport electrons from one half reaction to another Salt bridges complete the electrical circuit A voltaic cell will not function without a salt bridge
salt bridge Zn(s) electrode Culs) electrode 1.0M Zn (a 1.0 M Cu (aq A voltaic cell...
salt bridge Zn(s) electrode Culs) electrode 1.0M Zn (a 1.0 M Cu (aq A voltaic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a volt meter. One electrode compartment consists of a zinc strip placed in a 1.0 M ZnCl2 solution, and the other has a copper strip placed in a 1.0 M CuSOA solution. The overall cell reaction is: Zn(s)Cu2+(aq)= zn2+ (aq ) Cu (s)...
Part A Consider a voltaic cell that is set up as follows: Anode contains an Zn(s) electrode and 1M Zn2+(aq) Cathode cont...
Part A Consider a voltaic cell that is set up as follows: Anode contains an Zn(s) electrode and 1M Zn2+(aq) Cathode contains a Pt(s) electrode and 1M MnO4–(aq),Mn2+(aq), and H+(aq) Which of the following statements match the cathode? Select all that apply. Group of answer choices The electrode increases in mass Oxidation occurs at this half-cell Electrons enter the half-cell The electrode is inactive Cations from the salt-bridge move to this half-cell The electrode is negative Part B Which of...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn electrode inserted in a solution...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
25. The purpose of the salt bridge in an electrochemical cell is to A) maintain electrical...
25. The purpose of the salt bridge in an electrochemical cell is to A) maintain electrical neutrality in the half-cells via migration of ions. B) provide a source of ions to react at the anode and cathode. C) provide oxygen to facilitate oxidation at the anode. D) provide a means for electrons to travel from the anode to the cathode. E) provide a means for electrons to travel from the cathode to the anode.
A) B) C) C) Enter electrons as e. A voltaic cell is constructed in which the...
A) B)
C)
C)
Enter electrons as e. A voltaic cell is constructed in which the anode is a CuCu2+ half cell and the cathode is a II, half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The net cell reaction is: In the...
QUESTION 10 Which of the following statements concerning a voltaic cell is FALSE? A voltaic cell uses an oxidation-reduction reaction to produce electrical energy. O The oxidation half reaction occurs at the cathode. O The cell consists of two half cells. O At the anode a substance will lose electrons. O The anode and the cathode are separated by a salt bridge.
12. All of the following statements concerning voltaic cells are true EXCEPT a) a salt bridge allows cations and anions to move between the half-cells. b) electrons flow from the anode to the cathode in the external circuit. c) oxidation occurs at the cathode. d) a voltaic cell can be used as a source of energy, e) a voltaic cell consists of two-half cells. Answer:
All of the following statements concerning voltaic cells are true EXCEPT O a voltaic cell consists of two-half cells. electrons flow from the anode to the cathode. reduction occurs at the cathode. a salt bridge allows only cations to move between the half-cells. in the Zn2+/Zn-Cu/Cu2+ voltaic cell, Zn metal is the anode.
salt bridge Zn(s) electrode Culs) electrode 1.0M Zn (a 1.0 M Cu (aq A voltaic cell similar to that shown in the figure above is constructed. The electronic device shown at the top of the figure is a volt meter. One electrode compartment consists of a zinc strip placed in a 1.0 M ZnCl2 solution, and the other has a copper strip placed in a 1.0 M CuSOA solution. The overall cell reaction is: Zn(s)Cu2+(aq)= zn2+ (aq ) Cu (s)...
In a copper-zinc voltaic cell, one half-cell consists of a ZnZn
electrode inserted in a solution of zinc sulfate and the other
half-cell consists of a CuCu electrode inserted in a copper sulfate
solution. These two half-cells are separated by a salt bridge.
At the zinc electrode (anode), ZnZn metal undergoes oxidation by
losing two electrons and enters the solution as Zn2+Zn2+ ions. The
oxidation half-cell reaction that takes place at the anode is
Zn(s)→Zn2+(aq)+2e−Zn(s)→Zn2+(aq)+2e−
The CuCu ions undergo reduction...
25. The purpose of the salt bridge in an electrochemical cell is to A) maintain electrical neutrality in the half-cells via migration of ions. B) provide a source of ions to react at the anode and cathode. C) provide oxygen to facilitate oxidation at the anode. D) provide a means for electrons to travel from the anode to the cathode. E) provide a means for electrons to travel from the cathode to the anode.
A) B)
C)
C)
Enter electrons as e. A voltaic cell is constructed in which the anode is a CuCu2+ half cell and the cathode is a II, half cell. The half-cell compartments are connected by a salt bridge. (Use the lowest possible coefficients. Use the pull-down boxes to specify states such as (aq) or (s). If a box is not needed, leave it blank.) The anode reaction is: The cathode reaction is: The net cell reaction is: In the...
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