Class 11 Exam > Class 11 Questions > The flow of current is possible in Daniel cel...
Start Learning for Free
The flow of current is possible in Daniel cell only
- a)If the transfer of electrons does take place directly from Zn to Cu2+
- b)If there is a potential difference between the copper and zinc electrodes
- c)If the zinc and copper rods are connected by a salt bridge only
- d)If the zinc and copper rods are connected by the platinum wire only
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The flow of current is possible in Daniel cell onlya)If the transfer o...
The flow of current in a Daniel cell or any other electrochemical cell is due to the movement of electrons from the anode to the cathode. This happens through an external circuit connecting the two electrodes.
- Electron Transfer: In a Daniel cell, the zinc (Zn) electrode is oxidized to zinc ions (Zn2+), releasing two electrons. These electrons then move through the external circuit to the copper (Cu) electrode, reducing the copper ions (Cu2+) to copper atoms. However, the transfer of electrons does not occur directly from Zn to Cu2+ in the solution. Instead, it happens via the external circuit. Therefore, option A is incorrect.
- Potential Difference: The potential difference between the two electrodes in a Daniel cell is what drives the flow of current. When zinc is oxidized at the anode, it leaves behind electrons, creating a negative charge. At the same time, the reduction of copper ions at the cathode absorbs electrons, creating a positive charge. This difference in charge creates a potential difference or voltage that causes the electrons to flow from the anode to the cathode, generating current. Therefore, option B is correct.
- Salt Bridge: A salt bridge is a device used to complete the circuit in a Daniel cell by allowing the flow of ions between the two half-cells. This maintains the electrical neutrality within the half-cells, enabling the reaction to continue. However, it does not directly facilitate the flow of current, which is driven by the potential difference between the electrodes. Therefore, option C is incorrect.
- Platinum Wire: While a wire, such as one made of platinum, is needed to connect the two electrodes and provide a path for the electrons to move, it is not the presence of the wire itself that allows for the flow of current. Rather, it is the potential difference between the electrodes. Therefore, option D is incorrect.
In conclusion, the flow of current in a Daniel cell is possible if there is a potential difference between the copper and zinc electrodes. This potential difference drives the movement of electrons from the anode to the cathode, generating current.
Most Upvoted Answer
The flow of current is possible in Daniel cell onlya)If the transfer o...
Explanation:
The Daniel cell is an electrochemical cell that converts chemical energy into electrical energy. It consists of two half-cells, one containing zinc metal as an anode and the other containing copper metal as a cathode, and a salt bridge connecting them. The half-cells are filled with their respective electrolytes, and the reactions at the electrodes produce a potential difference between them.
The flow of current in the Daniel cell is possible only if there is a potential difference between the copper and zinc electrodes. This is because the potential difference drives the flow of electrons from the anode to the cathode, through the external circuit, and back to the anode through the salt bridge.
Factors affecting the potential difference in the Daniel cell:
The potential difference in the Daniel cell depends on various factors such as:
1. Nature of the electrodes: The potential difference depends on the nature of the electrodes used in the cell. Zinc is more reactive than copper, and hence, it tends to lose electrons more easily than copper. Therefore, the potential of the zinc electrode is lower than that of the copper electrode.
2. Concentration of the electrolytes: The potential difference also depends on the concentration of the electrolytes used in the cell. The higher the concentration of the electrolytes, the higher the potential difference.
3. Temperature: The potential difference also varies with temperature. The higher the temperature, the higher the potential difference.
Conclusion:
In conclusion, the flow of current in the Daniel cell is possible only if there is a potential difference between the copper and zinc electrodes. The potential difference depends on various factors such as the nature of the electrodes, concentration of the electrolytes, and temperature.
The Daniel cell is an electrochemical cell that converts chemical energy into electrical energy. It consists of two half-cells, one containing zinc metal as an anode and the other containing copper metal as a cathode, and a salt bridge connecting them. The half-cells are filled with their respective electrolytes, and the reactions at the electrodes produce a potential difference between them.
The flow of current in the Daniel cell is possible only if there is a potential difference between the copper and zinc electrodes. This is because the potential difference drives the flow of electrons from the anode to the cathode, through the external circuit, and back to the anode through the salt bridge.
Factors affecting the potential difference in the Daniel cell:
The potential difference in the Daniel cell depends on various factors such as:
1. Nature of the electrodes: The potential difference depends on the nature of the electrodes used in the cell. Zinc is more reactive than copper, and hence, it tends to lose electrons more easily than copper. Therefore, the potential of the zinc electrode is lower than that of the copper electrode.
2. Concentration of the electrolytes: The potential difference also depends on the concentration of the electrolytes used in the cell. The higher the concentration of the electrolytes, the higher the potential difference.
3. Temperature: The potential difference also varies with temperature. The higher the temperature, the higher the potential difference.
Conclusion:
In conclusion, the flow of current in the Daniel cell is possible only if there is a potential difference between the copper and zinc electrodes. The potential difference depends on various factors such as the nature of the electrodes, concentration of the electrolytes, and temperature.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
|
Explore Courses for Class 11 exam
|
|
Top Courses for Class 11View all
The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer?
Question Description
The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer?.
The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer?.
Solutions for The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11.
Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The flow of current is possible in Daniel cell onlya)If the transfer of electrons does take place directly from Zn to Cu2+b)If there is a potential difference between the copper and zinc electrodesc)If the zinc and copper rods are connected by a salt bridge onlyd)If the zinc and copper rods are connected by the platinum wire onlyCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 11 tests.
|
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup