Question : 51.              In a voltaic cell, the electron flow always from A)the : 1335549

 

 

51.              In a voltaic cell, the electron flow is always from

A)the salt bridge to the cathode.

B)the salt bridge to the anode.

C)the oxidizing agent through the salt bridge to the reducing agent.

D)the reducing agent through the salt bridge to the oxidizing agent.

E)the anode to the cathode.

 

52.              Consider a voltaic cell that corresponds to the following reaction:

Fe(s) + Ni2+(aq) ? Fe2+(aq) + Ni(s)

Which of the following statements is correct?

A)Iron is the oxidizing agent.

B)The Ni2+ solution must be in the half-cell with the iron electrode.

C)No salt bridge is necessary, since the charge is 2+ on both sides of the equation.

D)The nickel electrode is the cathode.

E)Four electrons will be transferred per atom of iron that reacts.

 

53.              Consider a voltaic cell that corresponds to the following reaction:

Mg(s) + Sn2+(aq) ? Mg2+(aq) + Sn(s)

Which of the following statements is correct?

A)Magnesium is the oxidizing agent.

B)The Sn2+ solution must be in the half-cell with the magnesium electrode.

C)No salt bridge is necessary, since the charge is 2+ on both sides of the equation.

D)The tin electrode is the cathode.

E)Four electrons will be transferred per atom of magnesium that reacts.

 

54.              Consider a voltaic cell that corresponds to the following reaction:

Zn(s) + Cu2+(aq) ? Zn2+(aq) + Cu(s)

Which of the following statements is correct?

A)Zinc is the oxidizing agent.

B)The Cu2+ solution must be in the half-cell with the zinc electrode.

C)No salt bridge is necessary, since the charge is 2+ on both sides of the equation.

D)The zinc electrode is the cathode.

E)Two electrons will be transferred in this reaction per atom of zinc that reacts.

 

55.              Consider a voltaic cell that corresponds to the following reaction:

Cu(s) + 2Ag+(aq) ? Cu2+(aq) + Ag(s)

Which of the following statements is correct?

A)Copper is the reducing agent.

B)The Cu2+ solution must be in the half-cell with the silver electrode.

C)No salt bridge is necessary, since the charge is 2+ on both sides of the equation.

D)The copper electrode is the cathode.

E)Four electrons will be transferred in this reaction per atom of copper that reacts.

 

56.              Given the following reaction in a voltaic cell:

Cu(s) + 2Ag+(aq) ? 2Ag(s) + Cu2+(aq)

Which of the following statements is correct?

A)Cu(s) is the anode.

B)Oxidation occurs at the silver electrode.

C)There is no cathode for this cell.

D)Ag(s) is the anode.

E)One mole of electrons is transferred in the reaction as written.

 

57.              In a fuel cell that uses gaseous hydrogen and oxygen as reactants, which one of the following reactions is occurring at the anode?

A)2H2O ? 2H2 + O2D)O2 + 4e– ? 2O2–

B)H2 ? 2H+ + 2e–E)2O2– ? O2 + 4e–

C)2H+ + 2e– ? H2

 

58.              Consider a voltaic cell that corresponds to the following reaction:

Cu(s) + 2Ag+(aq) ? Cu2+(aq) + Ag(s)

If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A)I is the copper electrode, which is the anode.

B)II is the Ag+ solution.

C)III is the salt bridge.

D)V contains the substance that is being reduced.

E)V is the silver electrode, which is the cathode.

 

59.              Consider a voltaic cell that corresponds to the following reaction:

Zn(s) + Cu2+(aq) ? Zn2+(aq) + Cu(s)

If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A)I is the zinc electrode, which is the anode.

B)II is the Cu2+ solution.

C)III is the salt bridge.

D)IV contains the substance that is being reduced.

E)V is the copper electrode, which is the cathode.

 

60.              Consider a voltaic cell that corresponds to the following reaction:

Mg(s) + Sn2+(aq) ? Mg2+(aq) + Sn(s)

If this reaction takes place in the electrochemical cell shown in the figure, which of the following statements is incorrect?

A)I is the magnesium electrode, which is the anode.

B)II is the Mg2+ solution.

C)III is the salt bridge.

D)IV contains the substance that is being oxidized.

E)V is the tin electrode, which is the cathode.

 

 

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more