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QUESTION 10 Which of the following statements concerning a voltaic cell is FALSE? A voltaic cell...
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.
20) 20) Which of the following statements concerning a voltaic cell is FALSE A) At the...
20) 20) Which of the following statements concerning a voltaic cell is FALSE A) At the anode a substance will lose electrons. B) A voltaic cell uses an oxidation-reduction reaction to produce electrical energy. C) The oxidation half reaction occurs at the cathode. D) The cell consists of two half cells. E) The anode and the cathode are separated by a salt bridge. - 21) The fluoride rinse in dental offices usually contains sodium fluoride, Sodium fluoride 2 1 can...
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:
Question 4 0.5 pts Which of the following statements about the salt bridge in a voltaic cell is false? The ions fro...
Question 4 0.5 pts Which of the following statements about the salt bridge in a voltaic cell is false? The ions from the salt bridge participate in the half-reactions, It allows electrical contact between the two solutions in the half-cells. It prevents mixing of the electrode solutions. It maintains the electrical neutrality in each half-cell .lons flow into and out of the salt bridge. Question 5 0.5 pts Which of the following statements about voltaic cells is false? Electrons flow...
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...
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.
A voltaic cell is constructed in which the anode is a Ag Ag half cell and...
A voltaic cell is constructed in which the anode is a Ag Ag half cell and the cathode is a CI Cl2 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: the Ag Ag electrode. |the CIICl2 electrode In...
A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are...
A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge. F2(g) + 28°(aq) — 2F (aq) + 12(s) The anode reaction is: The cathode reaction is: In the external circuit, electrons migrate the I'l, electrode the FF, electrode. In the salt bridge, anions migrate the FF, compartment the l'I, compartment. A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a...
A voltaic cell is constructed in which the following cellreaction occurs. The half-cell compartments are...
A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge.question 1 - Sn2+(aq)+ Co(s) ----------> Sn(s)+ Co2+(aq)The anode reaction (including states) is:The cathode reaction (including states) is:In the external circuit, electrons migrate _____fromto the Co|Co2+ electrode _____fromto the Sn|Sn2+ electrode.In the salt bridge, anions migrate _____fromto the Sn|Sn2+ compartment _____fromto the Co|Co2+ compartment.question 2 -A voltaic cell is constructed in which the anode is a Cd|Cd2+ half cell and the cathode is a Cu+|Cu2+ half cell. The half-cell...
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...
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.
20) 20) Which of the following statements concerning a voltaic cell is FALSE A) At the anode a substance will lose electrons. B) A voltaic cell uses an oxidation-reduction reaction to produce electrical energy. C) The oxidation half reaction occurs at the cathode. D) The cell consists of two half cells. E) The anode and the cathode are separated by a salt bridge. - 21) The fluoride rinse in dental offices usually contains sodium fluoride, Sodium fluoride 2 1 can...
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:
Question 4 0.5 pts Which of the following statements about the salt bridge in a voltaic cell is false? The ions from the salt bridge participate in the half-reactions, It allows electrical contact between the two solutions in the half-cells. It prevents mixing of the electrode solutions. It maintains the electrical neutrality in each half-cell .lons flow into and out of the salt bridge. Question 5 0.5 pts Which of the following statements about voltaic cells is false? Electrons flow...
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...
A voltaic cell is constructed in which the anode is a Ag Ag half cell and the cathode is a CI Cl2 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: the Ag Ag electrode. |the CIICl2 electrode In...
A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge. F2(g) + 28°(aq) — 2F (aq) + 12(s) The anode reaction is: The cathode reaction is: In the external circuit, electrons migrate the I'l, electrode the FF, electrode. In the salt bridge, anions migrate the FF, compartment the l'I, compartment. A voltaic cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a...
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