A Zinc half-cell is connected to an iron half-cell through a salt bridge and both...
A Zinc half-cell is connected to an iron half-cell through a salt bridge and both are also connected through a copper wire. At which electrode is reduction taking place and which electrode is positively charged?
- A) Zinc, zinc
- B) Iron, iron
- C) Zinc, Iron
- D) Iron, Zinc
Correct Answer: B) Iron, iron
Explanation
In this question, we are given a Zinc half-cell and an Iron half-cell that are connected through a salt bridge and a copper wire. The question is asking us to identify where reduction is taking place and which electrode is positively charged.Reduction is a process in which a reactant gains electrons, which means that the electrode where reduction is taking place is where electrons are being gained. In this case, reduction is taking place at the Iron half-cell because Iron is gaining electrons and becoming positively charged. Therefore, the correct answer is option B: Iron, Iron.
Additionally, the question asks which electrode is positively charged. A positively charged electrode is an electrode that has lost electrons. In this case, Zinc is losing electrons and becoming negatively charged, so the Zinc half-cell is negatively charged.
It's important to note that the salt bridge is used to maintain electrical neutrality between the two half-cells, and the copper wire is used to allow the flow of electrons between the two half-cells.
To summarize, in this question, reduction is taking place at the Iron half-cell, which is also positively charged. The Zinc half-cell is negatively charged because Zinc is losing electrons. The salt bridge maintains electrical neutrality between the two half-cells, and the copper wire allows the flow of electrons.