Homework Answers
Ans is c) cathode and reduction
because in electrolytic cell, anode is taken as positive and cathode is taken as negative. so positively charged metal ion are attracted towards cathode. so electrode at cathode looses electron into solution and reduced metal ion
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13. In an electrolytic cell the electrode at which the electrons enter the solution is called...
What is the reduction half-reaction? In the electrolytic cell of this experiment, copper metal is the...
What is the reduction half-reaction? In the electrolytic cell of this experiment, copper metal is the anode and zinc metal the cathode. The electrolyte solution is sulfuric acid, H2SO4. Oxidation occurs at the copper anode, where Cu is oxidized to Cu^2+: Cu (s) → Cu^2+ (aq) + 2 e– During the experiment, you might have noticed that at the end of the trials, the solution becomes slightly blue, which proves the existence of aqueous Cu^2+. What is the reduction half-reaction...
Electrolytic cells use electricity to cause a nonspontaneous redox reaction to occur. An electrolytic cell is...
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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...
A) B) C) C) Enter electrons as e. A voltaic cell is constructed in which the...
A) B)
C)
C)
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Enter electrons as e A voltaic cell is constructed in which the anode is a Mg...
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Enter electrons as e. A voltaic cell is constructed in which the anode is a Cr...
Enter electrons as e. A voltaic cell is constructed in which the anode is a Cr Cr3+ half cell and the cathode is a SnSn2+ 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 external...
8. Which statement about a voltaic cell is not correct? a. Electrons are produced as a...
8. Which statement about a voltaic cell is not correct? a. Electrons are produced as a product at the cathode. b. Reduction occurs at the cathode. c. Usually the cathode is a metal strip. d. In the external circuit, electrons flow toward the cathode. e. Chemical species can have their oxidation number decreased at the cathode.
Enter electrons as e A voltaic cell is constructed in which the anode is a Ni...
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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.
Enter electrons as e A voltaic cell is constructed in which the anode is a Mn...
Enter electrons as e A voltaic cell is constructed in which the anode is a Mn Mn+ half cell and the cathode is a Ag Agt 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 external circuit,...
Electrolytic cells use electricity to cause a nonspontaneous redox reaction to occur. An electrolytic cell is constructed using the following components: . a power source, such as a battery, • the substance that will undergo electrolysis, and • two inert electrodes (usually platinum), which serve as the electrical connection between the power source and the substance undergoing electrolysis. As with any cell, oxidation occurs at the anode and reduction occurs at the cathode. The oxidation of water, which produces oxygen...
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) 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...
Enter electrons as e A voltaic cell is constructed in which the anode is a Mg Mg2+ half cell and the cathode is a Ni Ni2+ 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 (ag) 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 external...
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Enter electrons as e A voltaic cell is constructed in which the anode is a Ni Ni2+ half cell and the cathode is a Hg|Hg2+ 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: + V> + The net cell reaction is:...
Enter electrons as e A voltaic cell is constructed in which the anode is a Mn Mn+ half cell and the cathode is a Ag Agt 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 external circuit,...
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