Which electrode is labeled as positive in a voltaic cell?Group of answer choicesboth anode and cathodeneither anode nor cathodeanode onlycathode only
Question
Which electrode is labeled as positive in a voltaic cell?
Group of answer choices:
- both anode and cathode
- neither anode nor cathode
- anode only
- cathode only
Solution
Understanding Electrode Labels in a Voltaic Cell
-
Definition of Electrodes: In a voltaic cell (also known as a galvanic cell), there are two electrodes: the anode and the cathode. These electrodes serve different functions within the electrochemical reaction.
-
Role of the Anode: The anode is the electrode where oxidation occurs. It is where electrons are produced and, therefore, it has a negative charge in a voltaic cell.
-
Role of the Cathode: The cathode is the electrode where reduction takes place. It is where electrons are consumed, making it positively charged.
-
Final Answer: The electrode labeled as positive in a voltaic cell is the cathode only.
Thus, the correct choice is "cathode only."
Similar Questions
all positive electrodes are anodes and all negative electrodes are cathodes is it true or false
What is the electrode connected to the negative terminal of an electrolytic cell called?
The reduction potential at cathode is 0.5 V while the oxidation potential at anode is 0.9 V. What is the cell potential?
In an electrolyte solution, there is the flow of________.Select an answerAelectrons onlyBnegative ions onlyCpositive ions onlyDnegative and positive ions both
Explain why the positive carbon electrodes must be continually replaced.[3 marks]
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.