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. |
Homework Answers
Add Answer to:
8. Which statement about a voltaic cell is not correct? a. Electrons are produced as a...
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.
QUESTION 13 Please match the correct word to each of the following definitions. This is for a voltaic cell. This el...
QUESTION 13 Please match the correct word to each of the following definitions. This is for a voltaic cell. This electrode is where reduction takes place. This liquid is needed for ion flow. 1. porous barrier 2. OIL RIG 3. cathode 4. oxidation This "wall" needs to allow ions to pass through. The external path where electrons travel. 5. electrolyte solution The loss of electrons. 6. wire A battery is a self-contained 17. anode - The acronym for "reduction takes...
Determine whether each statement describes an anode or a cathode in a voltaic cell. Where the...
Determine whether each statement describes an anode or a cathode in a voltaic cell.
Where the reduction occurs Choose...
The positive terminal Choose...
Where electrons flow from Choose...
Where the oxidation occurs Choose...
Where electrons flow to Choose...
The negative terminal Choose...
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)
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...
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.
Item 5 Part A What reaction (oxidation or reduction) occurs at the cathode of a voltaic...
Item 5 Part A What reaction (oxidation or reduction) occurs at the cathode of a voltaic cell? O reduction oxidation Submit Request Answer Part B What is the sign of the cathode? O O positive (+) negative (-) Submit Request Answer Part Do electrons flow toward or away from the cathode? O flow toward flow away
13. In an electrolytic cell the electrode at which the electrons enter the solution is called...
13. In an electrolytic cell the electrode at which the electrons enter the solution is called the the chemical change that occurs at this electrode is called (a) Anode, oxidation (b) Anode, reduction (c) Cathode, reduction (d) Cathode, oxidation (e) cannot tell unless we know the species being oxidized and reduced.
Enter electrons as e A voltaic cell is constructed in which the anode is a Mg...
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...
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...
QUESTION 13 Please match the correct word to each of the following definitions. This is for a voltaic cell. This electrode is where reduction takes place. This liquid is needed for ion flow. 1. porous barrier 2. OIL RIG 3. cathode 4. oxidation This "wall" needs to allow ions to pass through. The external path where electrons travel. 5. electrolyte solution The loss of electrons. 6. wire A battery is a self-contained 17. anode - The acronym for "reduction takes...
Determine whether each statement describes an anode or a cathode in a voltaic cell.
Where the reduction occurs Choose...
The positive terminal Choose...
Where electrons flow from Choose...
Where the oxidation occurs Choose...
Where electrons flow to Choose...
The negative terminal Choose...
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...
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.
Item 5 Part A What reaction (oxidation or reduction) occurs at the cathode of a voltaic cell? O reduction oxidation Submit Request Answer Part B What is the sign of the cathode? O O positive (+) negative (-) Submit Request Answer Part Do electrons flow toward or away from the cathode? O flow toward flow away
13. In an electrolytic cell the electrode at which the electrons enter the solution is called the the chemical change that occurs at this electrode is called (a) Anode, oxidation (b) Anode, reduction (c) Cathode, reduction (d) Cathode, oxidation (e) cannot tell unless we know the species being oxidized and reduced.
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...
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...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago