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A piece of granulated zinc was dropped into a copper sulphate solution. After some time, the colour of the solution changed from:
- a)light green to blue
- b)blue to colourless
- c)light green to colourless
- d)blue to yellow
Correct answer is option 'B'. Can you explain this answer?
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A piece of granulated zinc was dropped into a copper sulphate solution...
When a piece of granulated zinc was dropped into the copper sulphate solution, the colour of the solution changes from blue to colourless as the following reaction takes place
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Zn + CuSO4 → ZnSO4 + Cu blue colourless.
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A piece of granulated zinc was dropped into a copper sulphate solution...
Introduction:
When a piece of granulated zinc is dropped into a copper sulphate solution, a chemical reaction occurs between the zinc and copper sulphate. This reaction leads to a change in the color of the solution.
Explanation:
The reaction between zinc and copper sulphate can be represented by the following chemical equation:
Zn + CuSO4 → ZnSO4 + Cu
The zinc in the granulated form reacts with the copper sulphate solution, resulting in the formation of zinc sulphate and copper. The copper, being a solid, precipitates out of the solution, causing a visible change in the color of the solution.
Color Change:
In the beginning, the copper sulphate solution is blue in color. As the reaction progresses, the copper ions in the solution combine with the zinc to form solid copper. This solid copper appears as a reddish-brown precipitate. As the copper is removed from the solution, the blue color fades away, and the solution becomes colorless.
Therefore, the correct answer is option B - the color of the solution changes from blue to colorless.
Conclusion:
When a piece of granulated zinc is dropped into a copper sulphate solution, the color of the solution changes from blue to colorless. This is due to the formation of solid copper, which precipitates out of the solution, causing the blue color to fade away.
When a piece of granulated zinc is dropped into a copper sulphate solution, a chemical reaction occurs between the zinc and copper sulphate. This reaction leads to a change in the color of the solution.
Explanation:
The reaction between zinc and copper sulphate can be represented by the following chemical equation:
Zn + CuSO4 → ZnSO4 + Cu
The zinc in the granulated form reacts with the copper sulphate solution, resulting in the formation of zinc sulphate and copper. The copper, being a solid, precipitates out of the solution, causing a visible change in the color of the solution.
Color Change:
In the beginning, the copper sulphate solution is blue in color. As the reaction progresses, the copper ions in the solution combine with the zinc to form solid copper. This solid copper appears as a reddish-brown precipitate. As the copper is removed from the solution, the blue color fades away, and the solution becomes colorless.
Therefore, the correct answer is option B - the color of the solution changes from blue to colorless.
Conclusion:
When a piece of granulated zinc is dropped into a copper sulphate solution, the color of the solution changes from blue to colorless. This is due to the formation of solid copper, which precipitates out of the solution, causing the blue color to fade away.
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A piece of granulated zinc was dropped into a copper sulphate solution. After some time, the colour of the solution changed from:a)light green to blueb)blue to colourlessc)light green to colourlessd)blue to yellowCorrect answer is option 'B'. Can you explain this answer?
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