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Why does an iron nail become brownish in color and the blue color of copper sulfate solution fades?
- a)Due to a chemical reaction with air
- b)Because of a change in temperature
- c)As a result of a displacement reaction
- d)Through a physical reaction with water
Correct answer is option 'C'. Can you explain this answer?
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Why does an iron nail become brownish in color and the blue color of c...
Understanding the Reaction of Iron with Copper Sulfate
The process that leads to the brownish color of an iron nail and the fading blue color of copper sulfate solution involves a specific type of chemical interaction known as a displacement reaction.
Displacement Reaction Explained
- A displacement reaction occurs when a more reactive metal displaces a less reactive metal from its compound.
- In this scenario, iron (Fe) is more reactive than copper (Cu), which is found in copper sulfate (CuSO4).
Step-by-Step Process
1. Iron Nail in Copper Sulfate Solution:
- When an iron nail is placed in a copper sulfate solution, the iron reacts chemically with the copper ions in the solution.
2. Formation of Iron Sulfate:
- The iron displaces the copper from the copper sulfate, resulting in the formation of iron sulfate (FeSO4) and releasing copper metal.
- This reaction can be represented as:
Fe + CuSO4 → FeSO4 + Cu
3. Visual Changes:
- As copper is displaced, it appears as reddish-brown deposits on the iron nail. This gives the nail its characteristic brownish color.
- Simultaneously, the blue color of the copper sulfate solution fades due to the reduction of copper ions.
Conclusion
The transformation of the iron nail to a brownish hue and the fading blue color of copper sulfate is a classic example of a displacement reaction. Understanding this chemical process helps in grasping fundamental concepts in chemistry and its practical implications.
The process that leads to the brownish color of an iron nail and the fading blue color of copper sulfate solution involves a specific type of chemical interaction known as a displacement reaction.
Displacement Reaction Explained
- A displacement reaction occurs when a more reactive metal displaces a less reactive metal from its compound.
- In this scenario, iron (Fe) is more reactive than copper (Cu), which is found in copper sulfate (CuSO4).
Step-by-Step Process
1. Iron Nail in Copper Sulfate Solution:
- When an iron nail is placed in a copper sulfate solution, the iron reacts chemically with the copper ions in the solution.
2. Formation of Iron Sulfate:
- The iron displaces the copper from the copper sulfate, resulting in the formation of iron sulfate (FeSO4) and releasing copper metal.
- This reaction can be represented as:
Fe + CuSO4 → FeSO4 + Cu
3. Visual Changes:
- As copper is displaced, it appears as reddish-brown deposits on the iron nail. This gives the nail its characteristic brownish color.
- Simultaneously, the blue color of the copper sulfate solution fades due to the reduction of copper ions.
Conclusion
The transformation of the iron nail to a brownish hue and the fading blue color of copper sulfate is a classic example of a displacement reaction. Understanding this chemical process helps in grasping fundamental concepts in chemistry and its practical implications.
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Community Answer
Why does an iron nail become brownish in color and the blue color of c...
- When an iron nail is immersed in a copper sulfate solution, a displacement reaction occurs.
- In this reaction, iron displaces copper from copper sulfate solution, leading to the formation of iron sulfate and metallic copper.
- This explains why the iron nail turns brownish and the blue color of the copper sulfate solution fades, showcasing a classic example of a displacement reaction.
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Why does an iron nail become brownish in color and the blue color of copper sulfate solution fades?a)Due to a chemical reaction with airb)Because of a change in temperaturec)As a result of a displacement reactiond)Through a physical reaction with waterCorrect answer is option 'C'. Can you explain this answer?
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