Electrolysis Of Molten Zinc Bromide

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Quizzes Created: 4 | Total Attempts: 5,718

Questions: 6 | Attempts: 1,450 | Updated: Mar 22, 2023

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Electrolysis Of Molten Zinc Bromide - Quiz

In this quiz on the process of electrolysis, a technique in the scientific field of chemistry wherein direct electric current is used to drive a chemical reaction, we’ll be taking a specific look at the

Questions and Answers

1.

Bromide ions would move towards electrode A
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Look at the cell properly. The longer line represents positive end of the battery.

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2.

Electrode A is known as the anode.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Electrode A is negatively charged (as it is connected to the negative end of the battery). It is the cathode.

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1
0
3.

The cathode half equation is _______________.(a) Br^-(l) --> Br₂(g) + e(b) 2Br^-(l) --> Br₂(l) + 2e(c) Zn²⁺(l) + 2e--> Zn(s)(d) Zn²⁺(l) + 2e --> Zn(l)
- A.
  
  (a)
- B.
  
  (b)
- C.
  
  (c)
- D.
  
  (d)
Correct Answer
D. (d)

Explanation
The correct answer is (d) because it represents the reduction half-reaction of zinc ions (Zn2+) being reduced to zinc (Zn) by gaining two electrons (2e-). This is consistent with the definition of a cathode, which is the electrode where reduction occurs in an electrochemical cell.

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0
1
4.

The anode half equation is _______________.(a) 2Br^-(l) --> Br₂(g) + e(b) 2Br^-(l) --> Br₂(l) + 2e(c) Zn²⁺(l) + 2e--> Zn(s)(d) Zn²⁺(l) + 2e --> Zn(l)
- A.
  
  (a)
- B.
  
  (b)
- C.
  
  (c)
- D.
  
  (d)
Correct Answer
A. (a)

Explanation
The correct answer is (a) because it represents the oxidation of bromide ions (Br-) to bromine gas (Br2) and the release of an electron (e). This is consistent with the definition of an anode, which is the electrode where oxidation occurs.

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5.

A reduction reaction has taken place at electrode _______________.
- A.
  
  A
- B.
  
  B
Correct Answer
A. A

Explanation
A reduction reaction has taken place at electrode A.

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6.

The chloride ions are _______________ in the electrolysis reaction.
- A.
  
  Reduced
- B.
  
  Oxidized
Correct Answer
B. Oxidized

Explanation
In the electrolysis reaction, chloride ions are oxidized. This means that they lose electrons and undergo a chemical reaction in which their oxidation state increases. Oxidation occurs at the anode, where chloride ions give up their electrons to form chlorine gas. This process is essential for the overall reaction to occur, as it allows for the reduction of other species at the cathode.

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Current Version
Mar 22, 2023

Quiz Edited by
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Feb 21, 2010

Quiz Created by
Lohsj

Electrolysis Of Molten Zinc Bromide

Bromide ions would move towards electrode A

Electrode A is known as the anode.

The cathode half equation is _______________.(a) Br-(l) --> Br2(g) + e(b) 2Br-(l) --> Br2(l) + 2e(c) Zn2+(l) + 2e--> Zn(s)(d) Zn2+(l) + 2e --> Zn(l)

The anode half equation is _______________.(a) 2Br-(l) --> Br2(g) + e(b) 2Br-(l) --> Br2(l) + 2e(c) Zn2+(l) + 2e--> Zn(s)(d) Zn2+(l) + 2e --> Zn(l)

A reduction reaction has taken place at electrode _______________.

The chloride ions are _______________ in the electrolysis reaction.

The cathode half equation is _______________.(a) Br^-(l) --> Br₂(g) + e(b) 2Br^-(l) --> Br₂(l) + 2e(c) Zn²⁺(l) + 2e--> Zn(s)(d) Zn²⁺(l) + 2e --> Zn(l)

The anode half equation is _______________.(a) 2Br^-(l) --> Br₂(g) + e(b) 2Br^-(l) --> Br₂(l) + 2e(c) Zn²⁺(l) + 2e--> Zn(s)(d) Zn²⁺(l) + 2e --> Zn(l)