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During an experiment, Neha dipped a strip of X metal in a Y solution. After some time, she observed the solution becomes blue and a shining grayish-white. Then, what would be X and Y?
- a)X- Aluminum and Y- Silver nitrate.
- b)X- Copper and Y- Silver nitrate
- c)X- Aluminum and Y- Zinc nitrate
- d)X- Copper and Y- Zinc nitrate
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
During an experiment, Neha dipped a strip of X metal in a Y solution. ...
Possible Explanation:
When Neha observed that the solution turned blue and the metal strip became a shining grayish-white color, it indicates a chemical reaction has taken place. To determine the correct X and Y, we can analyze the observations and match them with known reactions involving metals and solutions.
Observation 1: The solution turns blue
Observation 2: The metal strip becomes a shining grayish-white color
Matching the observations with known reactions:
Option A: X-Aluminum and Y-Silver nitrate
In the reaction between aluminum and silver nitrate, the solution turns colorless and the aluminum strip becomes coated with silver. This does not match the observations given, so option A is incorrect.
Option B: X-Copper and Y-Silver nitrate
In the reaction between copper and silver nitrate, the solution turns blue as copper displaces silver from the silver nitrate solution. The copper strip becomes coated with silver, which gives it the shining grayish-white color. This matches both observations, so option B is the correct answer.
Option C: X-Aluminum and Y-Zinc nitrate
In the reaction between aluminum and zinc nitrate, there is no visible change in the solution color. The aluminum strip may react with the zinc nitrate, but it would not result in a shining grayish-white color. Therefore, option C is incorrect.
Option D: X-Copper and Y-Zinc nitrate
In the reaction between copper and zinc nitrate, there is no significant change in the solution color. The copper strip may react with the zinc nitrate, but it would not result in a shining grayish-white color. Thus, option D is incorrect.
Conclusion:
Based on the observations provided, the correct answer is option B. Neha dipped a strip of copper (X) in a silver nitrate solution (Y).
When Neha observed that the solution turned blue and the metal strip became a shining grayish-white color, it indicates a chemical reaction has taken place. To determine the correct X and Y, we can analyze the observations and match them with known reactions involving metals and solutions.
Observation 1: The solution turns blue
Observation 2: The metal strip becomes a shining grayish-white color
Matching the observations with known reactions:
Option A: X-Aluminum and Y-Silver nitrate
In the reaction between aluminum and silver nitrate, the solution turns colorless and the aluminum strip becomes coated with silver. This does not match the observations given, so option A is incorrect.
Option B: X-Copper and Y-Silver nitrate
In the reaction between copper and silver nitrate, the solution turns blue as copper displaces silver from the silver nitrate solution. The copper strip becomes coated with silver, which gives it the shining grayish-white color. This matches both observations, so option B is the correct answer.
Option C: X-Aluminum and Y-Zinc nitrate
In the reaction between aluminum and zinc nitrate, there is no visible change in the solution color. The aluminum strip may react with the zinc nitrate, but it would not result in a shining grayish-white color. Therefore, option C is incorrect.
Option D: X-Copper and Y-Zinc nitrate
In the reaction between copper and zinc nitrate, there is no significant change in the solution color. The copper strip may react with the zinc nitrate, but it would not result in a shining grayish-white color. Thus, option D is incorrect.
Conclusion:
Based on the observations provided, the correct answer is option B. Neha dipped a strip of copper (X) in a silver nitrate solution (Y).
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Community Answer
During an experiment, Neha dipped a strip of X metal in a Y solution. ...
- When the red-brown of a copper strip is placed in a colorless solution of silver nitrate, then a shining greyish-white deposit of silver is formed on the copper strip and a solution becomes blue due to the formation of copper nitrate.
Cu + 2AgNO3 → Cu(NO3)2 + 2Ag - In this case, displacement reaction occurs because copper is more reactive than silver.
- Therefore, copper displaces the silver from the silver nitrate compound.
Thus, the correct answer is X- Copper and Y- Silver nitrate.
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During an experiment, Neha dipped a strip of X metal in a Y solution. After some time, she observed the solution becomes blue and a shining grayish-white. Then, what would be X and Y?a)X- Aluminum and Y- Silver nitrate.b)X- Copper and Y- Silver nitratec)X- Aluminum and Y- Zinc nitrated)X- Copper and Y- Zinc nitrateCorrect answer is option 'B'. Can you explain this answer?
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