Salt Bridge Reactions: Fe2+ & Mg - Which is Correct?

In summary, when setting up a reaction between iron and magnesium, the placement of the solutions does not matter as long as they are on the correct sides of the salt bridge. However, it is more common for books to write the reaction using the second method, with the oxidation process on the left and the reduction process on the right. It may seem strange since magnesium is more readily oxidized than iron, but this is due to standard conditions.
  • #1
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Does it matter which way I have the solutions?

i.e. is this correct (in a reaction between iron and magnesium):

Fe2+ | Fe || Mg | Mg 2+

Or is this correct:

Fe | Fe2+ || Mg 2+ | Mg

Or are they all correct, as long as I have them on the correct sides of the salt bridge?
 
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  • #2
i think the second one is correct. most books write it on that way. on the left side, we have to write the oxidation process, while on the right side, we have to write the reduction process. but somehow it is a bit weird, coz magnesium is more readily oxidized than iron, so magnesium is oxidized while iron is reduced under standard condition. hopefully it can help
 

Related to Salt Bridge Reactions: Fe2+ & Mg - Which is Correct?

1. What is a salt bridge reaction?

A salt bridge reaction is a type of chemical reaction that occurs between two ions with opposite charges, typically in an aqueous solution. The salt bridge acts as a pathway for the transfer of ions between the two solutions, allowing the reaction to occur without the solutions mixing.

2. How does a salt bridge impact the reaction between Fe2+ and Mg?

In the reaction between Fe2+ and Mg, the presence of a salt bridge is crucial for the reaction to occur. Without a salt bridge, the two solutions would mix and the ions would be unable to react with each other. The salt bridge creates a pathway for the ions to transfer between the solutions, allowing the reaction to proceed.

3. Which ion is oxidized and which is reduced in a salt bridge reaction between Fe2+ and Mg?

In a salt bridge reaction between Fe2+ and Mg, Fe2+ is oxidized and Mg is reduced. This means that Fe2+ loses electrons and Mg gains electrons during the reaction.

4. How can you determine which ion is the oxidizing agent and which is the reducing agent in a salt bridge reaction?

The ion that is reduced is the oxidizing agent, while the ion that is oxidized is the reducing agent. This can be determined by looking at the charges of the ions before and after the reaction. The ion that becomes more positive (loses electrons) is oxidized and the ion that becomes more negative (gains electrons) is reduced.

5. Are there any safety concerns when conducting a salt bridge reaction between Fe2+ and Mg?

Yes, there are some safety concerns when conducting a salt bridge reaction between Fe2+ and Mg. Both Fe2+ and Mg are hazardous substances and should be handled with care. It is important to wear appropriate protective gear, such as gloves and goggles, when handling these chemicals. Additionally, the reaction should be conducted in a well-ventilated area to avoid inhaling any fumes.

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