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Intensity of blue colour increases gradually when _________________
- a)copper rod is dipped in silver nitrate solution
- b)silver rod is dipped in copper nitrate solution
- c)zinc rod is dipped in silver solution
- d)copper rod is dipped in zinc rod solution
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Intensity of blue colour increases gradually when _________________a)c...
When a copper rod is dipped in silver nitrate solution, a redox reaction occurs between Copper and an aqueous solution of silver nitrate.
- So the intensity of blue colour increases gradually as silver deposits on the rod.
Most Upvoted Answer
Intensity of blue colour increases gradually when _________________a)c...
Explanation:
When a copper rod is dipped in silver nitrate solution, a redox reaction takes place between copper and silver ions. The copper atoms from the rod lose electrons and form copper ions (Cu2+), while the silver ions (Ag+) in the solution gain electrons and form silver atoms. This reaction is represented by the following equation:
Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s)
The silver atoms that are formed gradually deposit onto the copper rod, forming a layer of silver. This layer of silver reflects light in the blue region of the electromagnetic spectrum, giving the appearance of an increased intensity of blue color.
The process can be further explained as follows:
1. Oxidation of copper: The copper rod acts as the reducing agent in this reaction. It loses electrons and forms copper ions (Cu2+) in the solution. This oxidation reaction is represented as follows:
Cu(s) → Cu2+(aq) + 2e-
2. Reduction of silver: The silver ions (Ag+) present in the silver nitrate solution act as the oxidizing agent. They gain electrons from the copper rod and form silver atoms (Ag) that deposit onto the surface of the rod. This reduction reaction is represented as follows:
2Ag+(aq) + 2e- → 2Ag(s)
3. Formation of silver layer: The silver atoms that are reduced from the silver ions gradually form a layer on the surface of the copper rod. This layer reflects light in the blue region of the spectrum, resulting in an increased intensity of blue color.
Overall, the gradual deposition of silver onto the copper rod leads to an increased intensity of blue color. It is important to note that this process may take some time to observe visible changes in color, as the deposition of silver occurs gradually.
When a copper rod is dipped in silver nitrate solution, a redox reaction takes place between copper and silver ions. The copper atoms from the rod lose electrons and form copper ions (Cu2+), while the silver ions (Ag+) in the solution gain electrons and form silver atoms. This reaction is represented by the following equation:
Cu(s) + 2AgNO3(aq) → Cu(NO3)2(aq) + 2Ag(s)
The silver atoms that are formed gradually deposit onto the copper rod, forming a layer of silver. This layer of silver reflects light in the blue region of the electromagnetic spectrum, giving the appearance of an increased intensity of blue color.
The process can be further explained as follows:
1. Oxidation of copper: The copper rod acts as the reducing agent in this reaction. It loses electrons and forms copper ions (Cu2+) in the solution. This oxidation reaction is represented as follows:
Cu(s) → Cu2+(aq) + 2e-
2. Reduction of silver: The silver ions (Ag+) present in the silver nitrate solution act as the oxidizing agent. They gain electrons from the copper rod and form silver atoms (Ag) that deposit onto the surface of the rod. This reduction reaction is represented as follows:
2Ag+(aq) + 2e- → 2Ag(s)
3. Formation of silver layer: The silver atoms that are reduced from the silver ions gradually form a layer on the surface of the copper rod. This layer reflects light in the blue region of the spectrum, resulting in an increased intensity of blue color.
Overall, the gradual deposition of silver onto the copper rod leads to an increased intensity of blue color. It is important to note that this process may take some time to observe visible changes in color, as the deposition of silver occurs gradually.
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